FC-APC Connector for Polarization-Maintaining Fiber
FC-APC Connector for Polarization-Maintaining Fiber. High-quality fiber optic component. OEM/ODM from Changzhou Jinshang.
The FC/APC connector for polarization-maintaining (PM) fiber is an angled-polish, screw-lock termination designed to keep low back-reflection while preserving the polarization axis of PM fiber.
Product Overview
Angled 8-degree APC polish dramatically reduces back reflection, which is critical in interferometric, sensing and laser systems that use polarization-maintaining fiber. This kit is part of our precision connector module offering for optical test and laboratory builds.
Correct keying relative to the PM fiber’s stress rods is essential; photographed variants show the component family rather than a single fixed configuration.
Key Features
- FC/APC 8-degree angled polish for low back reflection
- Screw-lock coupling for a stable, repeatable joint
- Supplied as a termination kit for PM fiber
- Keyed assembly to preserve polarization axis
- Component format for cable and pigtail production
- Protective boot and cap included
Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Coupling | FC/APC screw lock | angled 8 degree |
| Polish | APC | green-coded typically |
| Fiber type | Polarization-maintaining | PM / Panda style |
| Format | Connector kit | body, ferrule, boot, cap |
| Reflection | Low back-reflection | APC benefit |
| Keying | Axis-aligned | stress-rod orientation |
Applications
- Polarization-maintaining pigtails
- Interferometric and fiber-optic sensor systems
- Laser and laboratory instrumentation
- Optical test and measurement setups
- OEM PM fiber device integration
Performance & Reliability
PM fibers are highly sensitive to twist, bend and keying errors, which change polarization extinction ratio and loss. Controlled assembly on the correct fixture, clean end faces and proper torque during coupling are required to realize the low back-reflection of the APC polish.
Customization & Ordering
Provide the PM fiber type (e.g. Panda, bow-tie), axis orientation, jacket and length. We can supply loose kits or finished PM pigtails and patch cords. All assemblies are terminated, end-face inspected and individually tested before dispatch. Send your drawing, connector pair, fiber type and target volume, and our engineers will return a configuration, sample plan and lead time. Contact our sales team for OEM/ODM support.
FAQ
Q: Why APC rather than UPC for PM fiber?
A: APC angled polish reduces back-reflection, which protects laser sources and stabilizes interferometric and polarization-sensitive measurements.
Q: Do you build finished PM patch cords?
A: Yes. We can terminate PM fiber into FC/APC pigtails or duplex patch cords with documented key orientation.
Q: How important is the fiber keying?
A: Very. The stress-rod axis must be aligned to the connector key to preserve polarization extinction ratio.
Why Choose Us
TOCP Fiber supports precision optical termination. This connector complements our standard FC connector and FC adapters. Questions answered in our FAQs.