{"id":4204,"date":"2026-01-31T15:12:09","date_gmt":"2026-01-31T07:12:09","guid":{"rendered":"https:\/\/laserdiode-ld.com\/?p=4204"},"modified":"2026-01-15T15:14:49","modified_gmt":"2026-01-15T07:14:49","slug":"%ed%94%bc%ea%b7%b8%ed%85%8c%ec%9d%bc-%eb%a0%88%ec%9d%b4%ec%a0%80-%eb%8b%a4%ec%9d%b4%ec%98%a4%eb%93%9c-%eb%b0%8f-pm-%ed%8c%8c%ec%9d%b4%eb%b2%84-%ec%8b%9c%ec%8a%a4%ed%85%9c%ec%9d%98-%ec%a0%95%eb%b0%80","status":"publish","type":"post","link":"https:\/\/laserdiode-ld.com\/ko\/%ed%94%bc%ea%b7%b8%ed%85%8c%ec%9d%bc-%eb%a0%88%ec%9d%b4%ec%a0%80-%eb%8b%a4%ec%9d%b4%ec%98%a4%eb%93%9c-%eb%b0%8f-pm-%ed%8c%8c%ec%9d%b4%eb%b2%84-%ec%8b%9c%ec%8a%a4%ed%85%9c%ec%9d%98-%ec%a0%95%eb%b0%80-2","title":{"rendered":"\ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc \ubc0f PM \ud30c\uc774\ubc84 \uc2dc\uc2a4\ud15c\uc758 \uc815\ubc00 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1"},"content":{"rendered":"

\uc0b0\uc5c5\uc6a9 \ud3ec\ud1a0\ub2c9\uc2a4\uc5d0\uc11c \uad11\uc12c\uc720 \uacb0\ud569 \uc544\ud0a4\ud14d\ucc98\uc758 \uc9c4\ud654<\/h2>\n\n\n\n

\uc815\uad50\ud55c \ud3ec\ud1a0\ub2c9\uc2a4 \ubd84\uc57c\uc5d0\uc11c \uc790\uc720 \uacf5\uac04 \ub808\uc774\uc800 \ubc29\ucd9c\uc5d0\uc11c \uad11\uc12c\uc720 \uc720\ub3c4 \uc804\ub2ec\ub85c\uc758 \uc804\ud658\uc740 \uc2dc\uc2a4\ud15c \ubaa8\ub4c8\uc131\uacfc \uc815\ubc00\ub3c4\uc758 \ube44\uc57d\uc801\uc778 \ubc1c\uc804\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc81c\uc870\uc5c5\uccb4\uc758 \uacbd\uc6b0 \uaf2c\ub9ac \ubaa8\uc591 \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> \ub294 \ub2e8\uc21c\ud788 \uad11\uc12c\uc720\ub85c \ud328\ud0a4\uc9d5\ub41c \ubc18\ub3c4\uccb4\uac00 \uc544\ub2c8\ub77c \ubbf8\ud06c\ub860 \uc774\ud558\uc758 \uad11\uae30\uacc4\uc801 \uc815\ub82c\uc744 \uc704\ud55c \uace0\ub09c\uc774\ub3c4\uc758 \uc791\uc5c5\uc785\ub2c8\ub2e4. \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720 \uacb0\ud569 \uad11 \ud2b8\ub79c\uc2dc\ubc84 \ubaa8\ub4c8<\/strong> \uc7a5\uac70\ub9ac \ub370\uc774\ud130 \ub610\ub294 PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800<\/strong> \uc815\ubc00 \uac04\uc12d\uacc4\uc758 \uacbd\uc6b0 \ucee4\ud50c\ub9c1 \uc778\ud130\ud398\uc774\uc2a4\uc758 \ubb34\uacb0\uc131\uc774 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc758 \uad81\uadf9\uc801\uc778 \uc131\ub2a5\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\uace0\ud488\uc9c8 \ucf58\ud150\uce20 \uc81c\uc791\uc758 \ud575\uc2ec \uacfc\uc81c \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/a><\/strong> lies in the mismatch between the laser diode\u2019s output and the fiber\u2019s input characteristics. A standard edge-emitting \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/a> \ub294 \ud0c0\uc6d0\ud615\uc758 \uace0\ub3c4\ub85c \ubc1c\uc0b0\ub418\ub294 \ube54\uc744 \uc0dd\uc131\ud558\ub294 \ubc18\uba74, \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720\uc758 \ucf54\uc5b4\ub294 \uc9c1\uacbd\uc774 3~9\ub9c8\uc774\ud06c\ub85c\ubbf8\ud130\uc5d0 \ubd88\uacfc\ud55c \uc791\uc740 \uc6d0\ud615 \ub3c4\ud30c\uad00\uc785\ub2c8\ub2e4. \uc774 \ub450 \uac00\uc9c0 \ud615\uc0c1\uc744 \uc870\ud654\uc2dc\ud0a4\ub824\uba74 \uc815\uad50\ud55c \uad11\ud559 \uac1c\uc785\uacfc \uc5f4\ud33d\ucc3d, \uae30\uacc4\uc801 \uc751\ub825, \uc7a5\uae30\uc801\uc778 \uc7ac\ub8cc \uc548\uc815\uc131\uc744 \uace0\ub824\ud55c \uc81c\uc870 \uacf5\uc815\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\uae30\ubcf8 \uc6d0\ub9ac: \uad11\ud559 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uacb0\ud569 \ubb3c\ub9ac\ud559<\/h2>\n\n\n\n

\uc65c \uaf2c\ub9ac \ubaa8\uc591 \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/a><\/strong> fails or succeeds, one must first look at the mode-matching overlap integral. The efficiency of coupling light into a fiber is defined by how well the laser’s spatial mode matches the fiber’s fundamental mode (LP01).<\/p>\n\n\n\n

\uc218\uce58 \uc870\ub9ac\uac1c(NA) \ubc0f \ubaa8\ub4dc \ud544\ub4dc \uc9c1\uacbd(MFD)<\/h3>\n\n\n\n

The Numerical Aperture of a fiber determines the maximum angle at which it can accept light. Most single-mode fibers have an NA around 0.12 to 0.14. If the laser beam\u2019s divergence exceeds this, light is lost into the fiber cladding, causing noise and potential thermal issues at the pigtail interface. Similarly, the Mode Field Diameter (MFD) must be matched. For a \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> 1550nm\uc5d0\uc11c \uc791\ub3d9\ud558\ub294 \uacbd\uc6b0 MFD\ub294 10\ub9c8\uc774\ud06c\ub85c\ubbf8\ud130\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub808\uc774\uc800\uac00 5\ub9c8\uc774\ud06c\ub85c\ubbf8\ud130 \uc9c0\uc810\uc5d0 \ucd08\uc810\uc744 \ub9de\ucd94\uba74 \uad11\ucf00\uc774\ube14\uc774 \uc5bc\ub9c8\ub098 \uc644\ubcbd\ud558\uac8c \uc911\uc559\uc5d0 \uc704\uce58\ud558\ub4e0 \uc0c1\uad00\uc5c6\uc774 \ubd88\uc77c\uce58\ub85c \uc778\ud574 \uc0c1\ub2f9\ud55c \uc190\uc2e4\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub9c8\uc774\ud06c\ub85c \uad11\ud559\uc758 \uc5ed\ud560<\/h3>\n\n\n\n

High-performance modules utilize aspheric lenses or GRIN (Gradient Index) lenses to transform the laser’s fast-axis and slow-axis divergence into a symmetrical, convergent beam. For \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720 \uacb0\ud569 \uad11 \ud2b8\ub79c\uc2dc\ubc84 \ubaa8\ub4c8<\/a><\/strong>, \uc758 \uacbd\uc6b0, \uad11\uc12c\uc720 \ud301\uc758 \uc5ed\ubc18\uc0ac\uac00 \ub808\uc774\uc800 \uce90\ube44\ud2f0\ub97c \ubd88\uc548\uc815\ud558\uac8c \ub9cc\ub4e4\uc5b4 \uc0c1\ub300 \uac15\ub3c4 \ub178\uc774\uc988(RIN) \ubc0f \uc8fc\ud30c\uc218 \ud638\ud551\uc744 \uc720\ubc1c\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ub9c8\uc774\ud06c\ub85c \uc544\uc774\uc194\ub808\uc774\ud130\ub97c \ubc18\ub4dc\uc2dc \ud3ec\ud568\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

PM \uad11\uc12c\uc720 \uacb0\ud569 \ub808\uc774\uc800 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1: \ud3b8\uad11 \ubc0f \uc751\ub825 \ub85c\ub4dc<\/h2>\n\n\n\n

\ud45c\uc900 \ub2e8\uc77c \ubaa8\ub4dc\uc5d0\uc11c PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800<\/a><\/strong>, the engineering complexity increases by an order of magnitude. Polarization-Maintaining (PM) fibers, such as PANDA or Bow-tie designs, use internal stress rods to create birefringence. This birefringence ensures that if linearly polarized light is launched along one of the fiber’s principal axes, it maintains that polarization state throughout its length.<\/p>\n\n\n\n

\ud68c\uc804 \uc815\ub82c \ubc0f PER<\/h3>\n\n\n\n

\uc911\uc694\ud55c \uc9c0\ud45c\ub294 PM \uad11\uc12c\uc720 \uacb0\ud569 \ub808\uc774\uc800<\/a><\/strong> is the Polarization Extinction Ratio (PER). Achieving a PER of 20dB or 25dB requires the manufacturer to align the laser’s polarization axis with the fiber’s “slow axis” within a fraction of a degree. This is a rotational alignment task that happens simultaneously with the X-Y-Z spatial alignment. Any rotational error leads to “cross-talk,” where light bleeds into the “fast axis,” rendering the polarization unstable\u2014a fatal flaw for fiber optic gyroscopes or coherent sensing.<\/p>\n\n\n\n

\ud53c\uadf8\ud14c\uc77c\ub9c1 \ud504\ub85c\uc138\uc2a4: \uc561\ud2f0\ube0c \uc5bc\ub77c\uc778\uba3c\ud2b8\uc5d0\uc11c \ubc00\ud3d0 \ubc00\ubd09\uae4c\uc9c0<\/h2>\n\n\n\n

\uc81c\uc870 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> \uc5d0\ub294 \ub450 \uac00\uc9c0 \uc8fc\uc694 \ucca0\ud559\uc774 \uc788\uc2b5\ub2c8\ub2e4: \ud328\uc2dc\ube0c \uc5bc\ub77c\uc778\uba3c\ud2b8\uc640 \uc561\ud2f0\ube0c \uc5bc\ub77c\uc778\uba3c\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc561\ud2f0\ube0c \uc5bc\ub77c\uc778\uba3c\ud2b8 \uae30\uc220<\/h3>\n\n\n\n

Passive alignment relies on high-precision mechanical tolerances, but it rarely achieves the coupling efficiency required for high-power or single-mode applications. Active alignment involves powering the laser diode during the assembly process and using a computer-controlled 6-axis stage to find the point of maximum coupling. The fiber is moved in increments of 10 nanometers while the output power is monitored. Once the “peak” is found, the fiber is permanently fixed.<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

\uace0\uc815 \ubc29\ubc95: \uc5d0\ud3ed\uc2dc \ub300 \ub808\uc774\uc800 \uc6a9\uc811<\/h3>\n\n\n\n

The choice of fixing method is the primary driver of “Total Cost of Ownership” (TCO).<\/p>\n\n\n\n

    \n
  1. \uc790\uc678\uc120 \uacbd\ud654\ud615 \uc5d0\ud3ed\uc2dc:<\/strong> \uc800\ub834\ud55c \ube44\uc6a9\uc758 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> modules. While easy to implement, epoxies are prone to “creep” and moisture absorption, which can cause the fiber to drift out of alignment over years of service.<\/li>\n\n\n\n
  2. \ub808\uc774\uc800 \uc6a9\uc811:<\/strong> \uc5c5\uacc4 \ucd5c\uace0\uc758 \ud45c\uc900. \uace0\uc5d0\ub108\uc9c0 \ub808\uc774\uc800 \ud384\uc2a4\uac00 \uad11\ucf00\uc774\ube14 \ud398\ub8f0\uc744 \ubaa8\ub4c8 \ud558\uc6b0\uc9d5\uc5d0 \uc6a9\uc811\ud569\ub2c8\ub2e4. \uc774\ub807\uac8c \ud558\uba74 \ub4dc\ub9ac\ud504\ud2b8\uac00 \uac70\uc758 \uc5c6\ub294 \uae08\uc18d \ub300 \uae08\uc18d \uacb0\ud569\uc774 \uc0dd\uc131\ub429\ub2c8\ub2e4. \ub300\uc0c1 \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720 \uacb0\ud569 \uad11 \ud2b8\ub79c\uc2dc\ubc84 \ubaa8\ub4c8<\/strong> \ud574\uc800 \ub610\ub294 \ud56d\uacf5 \uc6b0\uc8fc \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ub808\uc774\uc800 \uc6a9\uc811\uc740 \uc720\uc77c\ud558\uac8c \uc2e4\ud589 \uac00\ub2a5\ud55c \uc635\uc158\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n

    Component Quality vs. System Cost: A Manufacturer’s Perspective<\/h2>\n\n\n\n

    OEM \uad6c\ub9e4\uc790\uac00 \ud754\ud788 \uc800\uc9c0\ub974\ub294 \uc2e4\uc218\ub294 \ucd08\uae30 \uad6c\ub9e4 \uac00\uaca9\uc5d0 \ucd08\uc810\uc744 \ub9de\ucd94\ub294 \uac83\uc785\ub2c8\ub2e4. \uaf2c\ub9ac \ubaa8\uc591 \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong>. However, the “component quality” directly impacts the cost of the entire system in three ways:<\/p>\n\n\n\n

    1. \uc5f4\ud33d\ucc3d \uacc4\uc218(CTE) \ubd88\uc77c\uce58<\/h3>\n\n\n\n

    \ubaa8\ub4c8 \ud558\uc6b0\uc9d5\uacfc \uad11\ucf00\uc774\ube14 \ud398\ub8f0\uc774 \uc11c\ub85c \ub2e4\ub978 CTE\ub97c \uac00\uc9c4 \uc7ac\ub8cc(\uc608: \uc54c\ub8e8\ubbf8\ub284\uacfc \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8)\ub85c \ub9cc\ub4e4\uc5b4\uc9c4 \uacbd\uc6b0, \ub808\uc774\uc800\uac00 \uac00\uc5f4\ub428\uc5d0 \ub530\ub77c \uacb0\ud569 \ud6a8\uc728\uc774 \ubcc0\ub3d9\ud569\ub2c8\ub2e4. \uace0\ud488\uc9c8 PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800<\/strong> \ub294 \ucf54\ubc14\ub974 \ub610\ub294 \uc778\ubc14 \ud558\uc6b0\uc9d5\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub113\uc740 \uc628\ub3c4 \ubc94\uc704(\uc608: \uc12d\uc528 -20~+70\ub3c4)\uc5d0\uc11c \uad11\uc12c\uc720\uac00 \ucd08\uc810\uc5d0 \uc720\uc9c0\ub418\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

    2. \uad11\ud559 \ud53c\ub4dc\ubc31 \uad00\ub9ac<\/h3>\n\n\n\n

    \uc800\uac00\ud615 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> modules often skip the internal optical isolator. For the system integrator, this means they must build external isolation into their optical path, increasing the overall footprint and complexity. A “manufacturer-integrated” isolator ensures the laser remains “quiet” and stable, which is critical for high-bitrate \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720 \uacb0\ud569 \uad11 \ud2b8\ub79c\uc2dc\ubc84 \ubaa8\ub4c8<\/strong>.<\/p>\n\n\n\n

    3. \uad11\ucf00\uc774\ube14 \ud301 \uc900\ube44<\/h3>\n\n\n\n

    The difference between a flat-cleaved fiber and an Angled Physical Contact (APC) polish is the difference between -14dB and -60dB of back-reflection. For high-power lasers, a poor fiber tip can lead to “fiber fuse,” where back-reflected energy melts the fiber core, traveling back into the laser and destroying it instantly.<\/p>\n\n\n\n

    \uad11 \uacb0\ud569 \ubaa8\ub4c8\uc6a9 \uae30\uc220 \uc0ac\uc591 \ub9e4\ud2b8\ub9ad\uc2a4<\/h2>\n\n\n\n

    \ub2e4\uc74c \ub370\uc774\ud130\ub294 \uc804\ubb38\uac00\uae09 \ud53c\uadf8\ud14c\uc77c \ubaa8\ub4c8\uc758 \uc131\ub2a5 \ubca4\uce58\ub9c8\ud06c\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n\n\n\n

    \ub9e4\uac1c\ubcc0\uc218<\/strong><\/td>\ud45c\uc900 SM \ud53c\uadf8\ud14c\uc77c<\/strong><\/td>PM \uad11\ucf00\uc774\ube14 \uacb0\ud569 \ud53c\uadf8\ud14c\uc77c<\/strong><\/td>MM(\uba40\ud2f0 \ubaa8\ub4dc) \ud53c\uadf8\ud14c\uc77c<\/strong><\/td><\/tr><\/thead>
    \uc77c\ubc18\uc801\uc778 \uad11\ucf00\uc774\ube14 \uc720\ud615<\/strong><\/td>G.652 \ub610\ub294 G.657.A1<\/td>PANDA PM Fiber<\/td>50\/125 \ub610\ub294 105\/125<\/td><\/tr>
    \uacb0\ud569 \ud6a8\uc728<\/strong><\/td>40% – 65%<\/td>35% – 55%<\/td>70% – 90%<\/td><\/tr>
    \ud3b8\uad11 \uc18c\uba78\ube44<\/strong><\/td>N\/A<\/td>18dB ~ 30dB<\/td>N\/A<\/td><\/tr>
    \uc815\ub82c \ud5c8\uc6a9 \uc624\ucc28<\/strong><\/td>+\/- 0.5\ub9c8\uc774\ud06c\ub85c\ubbf8\ud130<\/td>+\/- 0.2 \ub9c8\uc774\ud06c\ub85c\ubbf8\ud130<\/td>+\/- 5.0 \ub9c8\uc774\ud06c\ub85c\ubbf8\ud130<\/td><\/tr>
    \uc218\uc815 \ubc29\ubc95<\/strong><\/td>\ub808\uc774\uc800 \uc6a9\uc811 \/ \uc5d0\ud3ed\uc2dc<\/td>\ub808\uc774\uc800 \uc6a9\uc811<\/td>\uc5d0\ud3ed\uc2dc\/\ub0a9\ub55c<\/td><\/tr>
    \ubc18\ud488 \uc190\uc2e4(APC)<\/strong><\/td>> 60dB \ucd08\uacfc<\/td>> 55dB<\/td>> 35dB<\/td><\/tr>
    \ucd94\uc801 \uc624\ub958(-20~70\u2103)<\/strong><\/td>< 0.5dB<\/td>< 1.0dB<\/td>< 0.2dB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \uc0ac\ub840 \uc5f0\uad6c: \uace0\uc548\uc815\uc131 OCT \uc758\ub8cc\uc6a9 \uc601\uc0c1 \uc2dc\uc2a4\ud15c<\/h2>\n\n\n\n

    \uace0\uac1d \ubc30\uacbd<\/h3>\n\n\n\n

    \ud55c \uc758\ub8cc \uae30\uae30 OEM\uc740 \uc548\uacfc \uc601\uc0c1 \ucd2c\uc601\uc744 \uc704\ud55c \ucc28\uc138\ub300 \uad11\ud559 \uc77c\uad00\uc131 \ub2e8\uce35 \ucd2c\uc601(OCT) \uc2dc\uc2a4\ud15c\uc744 \uac1c\ubc1c \uc911\uc774\uc5c8\uc2b5\ub2c8\ub2e4. \uc774 \uc2dc\uc2a4\ud15c\uc5d0\ub294 \uc774\ubbf8\uc9c0 \ub300\ube44\ub97c \uc720\uc9c0\ud558\uae30 \uc704\ud574 \ub178\uc774\uc988\uac00 \ub9e4\uc6b0 \ub0ae\uace0 \ud3b8\uad11 \uc548\uc815\uc131\uc774 \ub192\uc740 1310nm \uad11\uc6d0\uc774 \ud544\uc694\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

    \uae30\uc220\uc801 \uacfc\uc81c<\/h3>\n\n\n\n

    \uace0\uac1d\uc774 \ud0c0\uc0ac \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> that suffered from “polarization wandering.” Every time the fiber cable was moved or the ambient temperature shifted, the image quality would degrade. The technical analysis revealed that the internal stress rods of the PM fiber were not correctly aligned with the laser’s E-field, and the epoxy used to secure the pigtail was softening under the laser\u2019s operating heat.<\/p>\n\n\n\n

    \uae30\uc220 \ud30c\ub77c\ubbf8\ud130 \ubc0f \uc124\uc815<\/h3>\n\n\n\n
      \n
    • \uc911\uc2ec \ud30c\uc7a5:<\/strong> 1310nm +\/- 5nm.<\/li>\n\n\n\n
    • \uc12c\uc720 \uc720\ud615:<\/strong> PM1300 PANDA \ud30c\uc774\ubc84.<\/li>\n\n\n\n
    • \uc6d0\ud558\ub294 PER:<\/strong> > 22 dB across the full temperature range.<\/li>\n\n\n\n
    • \ucee4\ud50c\ub9c1 \ubaa9\ud45c:<\/strong> > 2.0 mW output from a 10 mW chip.<\/li>\n\n\n\n
    • \ud328\ud0a4\uc9c0:<\/strong> 14\ud540 \ubc84\ud130\ud50c\ub77c\uc774, \ub0b4\ubd80 TEC(\uc5f4\uc804 \ub0c9\uac01\uae30) \ud3ec\ud568.<\/li>\n<\/ul>\n\n\n\n

      \ud488\uc9c8 \uad00\ub9ac(QC) \ubc0f \uad6c\ud604<\/h3>\n\n\n\n

      \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uc81c\uc870\uc5c5\uccb4\ub294 \uc0dd\uc0b0\uc744 10nm \ud574\uc0c1\ub3c4\uc758 \uc561\ud2f0\ube0c \uc5bc\ub77c\uc778\uba3c\ud2b8 \uc2a4\ud14c\uc774\uc158\uc73c\ub85c \uc62e\uacbc\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

        \n
      1. \ub3d9\uc801 PER \ubaa8\ub2c8\ud130\ub9c1:<\/strong> \uc815\ub82c\ud558\ub294 \ub3d9\uc548 \uad11\ucf00\uc774\ube14\uc774 \ud68c\uc804\ud558\ub294 \ub3d9\uc548 PER\uc744 \uc2e4\uc2dc\uac04\uc73c\ub85c \ubaa8\ub2c8\ud130\ub9c1\ud588\uc2b5\ub2c8\ub2e4. \uad11\ucf00\uc774\ube14\uc740 25dB \ud53c\ud06c\uc5d0\uc11c \uace0\uc815\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n
      2. CTE \ub9e4\uce6d:<\/strong> \ud558\uc6b0\uc9d5\uc740 Kovar\ub85c \ubcc0\uacbd\ub418\uc5c8\uace0, \ub300\uce6d\uc801\uc778 \uc751\ub825 \ubd84\ud3ec\ub97c \ubcf4\uc7a5\ud558\uae30 \uc704\ud574 \uad11\ucf00\uc774\ube14 \ud398\ub8f0\uc740 \uc138 \uc9c0\uc810(120\ub3c4 \uac04\uaca9)\uc5d0\uc11c \ub808\uc774\uc800 \uc6a9\uc811\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n
      3. \ubc88\uc778 \ud504\ub85c\ud1a0\ucf5c:<\/strong> \uc644\ub8cc\ub41c PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800<\/strong> \ubaa8\ub4c8\uc744 \uc12d\uc528 -40\ub3c4\uc5d0\uc11c +85\ub3c4\uae4c\uc9c0 100\ubc88\uc758 \uc5f4 \uc0ac\uc774\ud074\uc744 \uac70\ucce4\uc2b5\ub2c8\ub2e4. \ucd94\uc801 \uc624\ucc28\uac00 0.3dB \ubbf8\ub9cc\uc778 \ubaa8\ub4c8\ub9cc \ubc30\uc1a1\uc774 \ud5c8\uac00\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n

        \uacb0\ub860<\/h3>\n\n\n\n

        \uc77c\ubc18\uc801\uc778 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> to a laser-welded, PM-optimized module, the OEM eliminated the polarization drift. The OCT system’s signal-to-noise ratio improved by 15%, and the field failure rate related to optical misalignment dropped to zero. This demonstrates that for high-precision medical applications, the “upfront” cost of a high-integrity pigtail is recovered through reduced maintenance and superior diagnostic performance.<\/p>\n\n\n\n

        \uc2dc\uc7a5 \ub3d9\ud5a5: \uc2e4\ub9ac\ucf58 \ud3ec\ud1a0\ub2c9\uc2a4 \ubc0f \ud1b5\ud569 \ud2b8\ub79c\uc2dc\ubc84\uc758 \ubd80\uc0c1<\/h2>\n\n\n\n

        \ubbf8\ub798\ub97c \ubc14\ub77c\ubcf4\uba70 \ub2e8\uc77c \ubaa8\ub4dc \uad11\uc12c\uc720 \uacb0\ud569 \uad11 \ud2b8\ub79c\uc2dc\ubc84 \ubaa8\ub4c8<\/strong>, we see a push toward “silicon photonics.” In this architecture, the laser is integrated directly onto a silicon chip. However, even with these advances, the “pigtailing” problem remains. Getting the light from the silicon waveguide into an optical fiber still requires the same principles of mode matching and mechanical stability that we apply to traditional \uaf2c\ub9ac \ubaa8\uc591 \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc<\/strong> \uc2dc\uc2a4\ud15c\uc73c\ub85c \uc804\ud658\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

        \ub610\ud55c, \ub2e4\uc74c\uacfc \uac19\uc740 \uc218\uc694\ub3c4 \uc99d\uac00\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800<\/strong> sources is expanding beyond traditional telecommunications into Quantum Key Distribution (QKD) and LiDAR for autonomous vehicles. In these fields, the “Pigtail” is no longer a simple component\u2014it is a critical optical gateway that must survive the rigors of the road or the vacuum of space.<\/p>\n\n\n\n

        \n\n\n\n

        FAQ: \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \uae30\uc220\uc5d0 \ub300\ud55c \uc804\ubb38\uac00 \ubb38\uc758<\/h2>\n\n\n\n

        Q1: What is “Tracking Error” in a pigtailed laser diode?<\/p>\n\n\n\n

        A: \ucd94\uc801 \uc624\ucc28\ub294 \uc628\ub3c4\uac00 \ubcc0\ud568\uc5d0 \ub530\ub77c \ubaa8\ub2c8\ud130 \uad11 \ub2e4\uc774\uc624\ub4dc \uc804\ub958\uc5d0 \ube44\ud574 \uacb0\ud569\ub41c \ucd9c\ub825 \uc804\ub825\uc774 \uc5bc\ub9c8\ub098 \ubcc0\ud654\ud558\ub294\uc9c0\ub97c \uce21\uc815\ud55c \uac12\uc785\ub2c8\ub2e4. \uc774\ub294 \uad11\uc120\ub85c \uc815\ub82c\uc758 \uae30\uacc4\uc801 \uc548\uc815\uc131\uc744 \uc9c1\uc811\uc801\uc73c\ub85c \ub098\ud0c0\ub0b4\ub294 \uc9c0\ud45c\uc785\ub2c8\ub2e4. \ucd94\uc801 \uc624\ucc28\uac00 \ub192\ub2e4\ub294 \uac83\uc740 \ubaa8\ub4c8\uc774 \uc5f4\uc801\uc73c\ub85c \ud33d\ucc3d\ud558\uac70\ub098 \uc218\ucd95\ud568\uc5d0 \ub530\ub77c \uad11\ucf00\uc774\ube14\uc774 \ub808\uc774\uc800 \uc2a4\ud31f\uc5d0\uc11c \ubb3c\ub9ac\uc801\uc73c\ub85c \uba40\uc5b4\uc9c0\uace0 \uc788\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

        Q2: PM \ud30c\uc774\ubc84 \uacb0\ud569 \ub808\uc774\uc800\uc758 \uacb0\ud569 \ud6a8\uc728\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \ud45c\uc900 \ub2e8\uc77c \ubaa8\ub4dc \ud53c\uadf8\ud14c\uc77c\ubcf4\ub2e4 \ub0ae\uc740 \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/p>\n\n\n\n

        A: PM \uad11\ucf00\uc774\ube14\uc740 \uc751\ub825\ubd09\uc73c\ub85c \uc778\ud574 \ucf54\uc5b4 \uad6c\uc870\uac00 \uc57d\uac04 \ub354 \ubcf5\uc7a1\ud558\uba70, \ud68c\uc804 \uc815\ub82c\uc5d0 \ub300\ud55c \uc694\uad6c \uc0ac\ud56d\uc73c\ub85c \uc778\ud574 \ub610 \ub2e4\ub978 \uc81c\uc57d\uc774 \ucd94\uac00\ub429\ub2c8\ub2e4. \uc644\ubcbd\ud55c \ud68c\uc804 PER\uc744 \ub2ec\uc131\ud558\uae30 \uc704\ud574 X-Y-Z \ud3ec\uc9c0\uc154\ub2dd\uc744 \uc57d\uac04\ub9cc \ud0c0\ud611\ud558\uba74 \ucd1d \uc804\ub825 \uacb0\ud569\uc774 \uc57d\uac04 \ub0ae\uc544\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n

        Q3: \uad11\uc12c\uc720\uac00 \ud30c\uc190\ub41c \uacbd\uc6b0 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc\ub97c \uc218\ub9ac\ud560 \uc218 \uc788\ub098\uc694?<\/p>\n\n\n\n

        A: \ub300\ubd80\ubd84\uc758 \uace0\uc131\ub2a5 \ubaa8\ub4c8, \ud2b9\ud788 \ub808\uc774\uc800 \uc6a9\uc811 \ubaa8\ub4c8\uc758 \uacbd\uc6b0 \uc218\ub9ac\uac00 \ubd88\uac00\ub2a5\ud569\ub2c8\ub2e4. \uc815\ub82c\uc740 \uacf5\uc7a5 \uc218\uc900\uc5d0\uc11c \ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc758 \ud5c8\uc6a9 \uc624\ucc28\ub85c \uc124\uc815\ub429\ub2c8\ub2e4. \ubaa8\ub4c8\uc744 \ub2e4\uc2dc \ud53c\uadf8\ud14c\uc77c\ub9c1\ud558\ub824\uba74 \uc77c\ubc18\uc801\uc73c\ub85c \ubc00\ud3d0 \ubc00\ubd09\uc744 \uae68\uace0 \ub0b4\ubd80 \ub9c8\uc774\ud06c\ub85c \uc635\ud2f1\uc744 \ud30c\uad34\ud574\uc57c \ud569\ub2c8\ub2e4. \uad11\uc12c\uc720 \uc7ac\ud0b7\uc758 \uc801\uc808\ud55c \uc2a4\ud2b8\ub808\uc778 \ub9b4\ub9ac\ud504\uac00 \ud30c\uc190\uc5d0 \ub300\ud55c \ucd5c\uc120\uc758 \ubc29\uc5b4\ucc45\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

        Q4: How does the “bend radius” of the pigtail affect the laser’s performance?<\/p>\n\n\n\n

        A: For a pigtail laser diode, exceeding the minimum bend radius causes macro-bending loss. In PM Fiber Coupled Laser systems, tight bends can also induce mechanical stress that alters the birefringence of the fiber, significantly degrading the PER. Always follow the fiber manufacturer’s specification for minimum bend diameter (typically 20-30mm for SM fiber).<\/p>\n\n\n\n

        Q5: \ud53c\uadf8\ud14c\uc77c\uc5d0 14\ud540 \ubc84\ud130\ud50c\ub77c\uc774 \ud328\ud0a4\uc9c0\ub97c \uc0ac\uc6a9\ud558\uba74 \uc5b4\ub5a4 \uc774\uc810\uc774 \uc788\ub098\uc694?<\/p>\n\n\n\n

        A: \ubc84\ud130\ud50c\ub77c\uc774 \ud328\ud0a4\uc9c0\ub294 \uc5f4\uc804\uae30 \ub0c9\uac01\uae30(TEC), \uc11c\ubbf8\uc2a4\ud130, \uad11\uc808\uc5f0\uae30\ub97c \uc704\ud55c \ucda9\ubd84\ud55c \uacf5\uac04\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ud53c\uadf8\ud14c\uc77c \ub808\uc774\uc800 \ub2e4\uc774\uc624\ub4dc\uac00 \uc77c\uc815\ud55c \ub0b4\ubd80 \uc628\ub3c4\uc5d0\uc11c \uc791\ub3d9\ud558\uc5ec \uc678\ubd80 \ud658\uacbd\uc5d0 \uad00\uacc4\uc5c6\uc774 \ud30c\uc7a5\uacfc \uacb0\ud569 \ud6a8\uc728\uc744 \uc548\uc815\uc801\uc73c\ub85c \uc720\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"

        The Evolution of Fiber-Coupled Architecture in Industrial Photonics In the sophisticated world of photonics, the transition from free-space laser emission to fiber-guided delivery represents a leap in system modularity and precision. For a manufacturer, the pigtailed laser diode is not merely a semiconductor packaged with an optical fiber; it is a high-stakes exercise in sub-micron 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Pigtailed Laser Diode and PM Fiber Coupling Design"],"_aioseo_description":["Technical analysis of pigtailed laser diode assembly, PM fiber coupled lasers, and high-performance SM transceiver modules for medical and industrial OEMs."],"_aioseo_keywords":["a:0:{}"],"_aioseo_og_title":[""],"_aioseo_og_description":[""],"_aioseo_og_article_section":[""],"_aioseo_og_article_tags":["a:0:{}"],"_aioseo_twitter_title":[""],"_aioseo_twitter_description":[""],"ao_post_optimize":["a:6:{s:16:\"ao_post_optimize\";s:2:\"on\";s:19:\"ao_post_js_optimize\";s:2:\"on\";s:20:\"ao_post_css_optimize\";s:2:\"on\";s:12:\"ao_post_ccss\";s:2:\"on\";s:16:\"ao_post_lazyload\";s:2:\"on\";s:15:\"ao_post_preload\";s:0:\"\";}"],"catce":["sidebar-widgets4"],"_wpsp_is_facebook_share":["on"],"_wpsp_is_twitter_share":["on"],"_wpsp_is_linkedin_share":["on"],"_wpsp_is_pinterest_share":["on"],"_wpsp_custom_templates":["a:7:{s:8:\"facebook\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:7:\"twitter\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:8:\"linkedin\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:9:\"pinterest\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:9:\"instagram\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:6:\"medium\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}s:7:\"threads\";a:3:{s:8:\"template\";s:0:\"\";s:8:\"profiles\";a:0:{}s:9:\"is_global\";b:0;}}"],"views":["341"]},"aioseo_notices":[],"medium_url":false,"thumbnail_url":false,"full_url":false,"_links":{"self":[{"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/posts\/4204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/comments?post=4204"}],"version-history":[{"count":2,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/posts\/4204\/revisions"}],"predecessor-version":[{"id":4207,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/posts\/4204\/revisions\/4207"}],"wp:attachment":[{"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/media?parent=4204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/categories?post=4204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/laserdiode-ld.com\/ko\/wp-json\/wp\/v2\/tags?post=4204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}