Polarization-Maintaining patch cord (PM patch cord for short) are specialized fiber optic patch cables that, by introducing stress zones or specialized structures within the fiber core, achieve high birefringence during transmission, thereby maintaining the polarization state of the optical signal. While conventional optical fiber is susceptible to polarization changes due to external factors, polarization-maintaining fiber effectively avoids this problem through its design.
PM patch cords are commonly used in scenarios requiring high polarization stability, such as:
The polarization-maintaining patch cord Yingda provided are mainly use PANDA fiber.
Yingda manufactures a wide range of PM patch cords, which production and testing standards primarily cover physical specifications, appearance requirements, classification parameters, length and attenuation testing, end-face 3D inspection, optical performance testing, connectivity, and durability testing. All PM patch cords will compliance with IEC 61755-3-31 and TIA-568 international standards.
Polarization-maintaining patch cords typically use single core indoor cables. For higher requirements, armored cables can be used with better tension strength.
Panda fiber differs from ordinary fiber in that it has two cat’s eyes on either side of the fiber core, distinguishing between fast and slow axes. During alignment and connection, the slow and fast axes of the fiber must be precisely aligned to ensure alignment of stress zones and prevent polarization shifts.
✅ Fast Axis: the connector key is alignment with the polarized light.
✅ Slow Axis: the connector key is cross with the polarized light.
The PM patch cord cable can be bare fiber 250um, 900µm or 3mm.
The 0.9mm loose tube is made of hytrel, and the 2mm or 3mm loose tube is typically made of PVC or LSZH, which can be customized to meet customer requirements.
Kind Note: If you need to pre terminated fiber PM patch cord with bare fibers, it is every easy to break the fiber during assembly, crimping or polishing, so we must add 1cm section of loose tube at the connector tails.
Meanwhile, the loose tube or cable sheath colors for PM patch cords can be customized to your specifications. Commonly used colors include green, blue, red, gray, and white.
The mostly used optic connectors for PM patch cord are FC connectors due to threaded locking mechanism, which ensures precise alignment of the fiber ferrule, minimizing polarization deviations caused by mechanical vibration or insertion and removal.
Meanshile, the FC interface is standard for traditional high-precision instruments (such as spectrometers and test equipment), facilitating compatibility with existing systems. And in order t help better plug and unplug the connectors, we can provide long end caps (or called tethered dust cover) as left:
Yingda accept start with small order to build up trust, but only focus on wholesaler, distributor or ISP, no retailer. Because the international freight cost for only few pieces are too high to afford, suggest you to buy local.
Yingda are fiber patch cord factory, no middle man, competitive price help you win more market.
It depends, our production time is fast, daily 10000pcs connectors.
Please leave your delivery address and details, then will check with if can door to door service or not.
It depends, please let us know your company details, then we will check with our agent in your country and let you know.
We only do TT, no credit, hope understanding and support. Then we can focus on our product quality more to help build long term business partnership.
Suggest to use G.657A instead of G.652D, an furthermore, if extremely limited space, suggest to use G.657B3, which bend radius is the smallest to 5mm.
Singe mode fiber optic patch cable is suitable for long distance transmission, especially G.652D.
High productivity efficiency, skilled front-line operators and strict production control ensure timely delivery.
High-precision testing equipment and top industry quality control system ensure high quality standards.
Long-term stable supply chain and cost control that changes in line with market trends ensure the best price
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