How green optical fiber connectors work
What we see in the photograph above are the green connectors at two ends of a fiber optic patch cable. The green color tells us that the connector is a so-called “SC/APC” connector.
View more
Understanding Fiber Connector Types ST SC LC FC with UDP or
It''s important to never directly mate an APC connector (green) with a UPC or PC connector (blue or black), as this can damage the fiber surfaces. If such a connection is needed, use a specialized
View more
APC, UPC, PC Fiber Connector Types Comparison and Selection
End Face Structure - The basic difference between UPC vs PC is the structure of the end face of fiber connectors. The PC connector features an almost flat surface, whereas UPC looks like a
View more
The Importance of Optical Fiber Connector End-Face
This article explores the importance of key parameters—Radius of Curvature, Apex Offset, and Fiber Height—and methods to achieve high-quality end-face geometry.
View more
Fiber Connector Types: A Comprehensive Guide 2025
Among these components, fiber connector types are essential to network performance, reliability, and scalability. This guide will walk you through the most common fiber connector types,
View more
Fiber Optic Color Code: The Ultimate TIA-598-C Guide (2026)
Why are some fiber optic connectors green and others blue? Connector colors indicate the polish angle of the fiber end-face, which is critical for safety and performance.
View more
A Guide to Fiber End Face Shape and Polish
Explore the critical differences between UPC, APC, and expanded beam fiber end face shapes and polishes. Learn how geometry impacts signal reflectance, insertion loss, application, and
View more
Microscope for Benchtop with 10 inch LCD Monitor and BNC Cable
Benchtop Fiber Optic Inspection Microscope with 10" LCD Monitor (BNC) Built for precision and consistency, the BTS300BNC benchtop microscope delivers clear, repeatable inspection of fiber
View more
What is the Difference Between Green and Blue Fiber Ends?
Green fiber ends signify connectors with an APC (Angled Physical Contact) polish. APC Polish: APC connectors have an 8-degree angle cut in the ferrule end-face.
View more
APC vs UPC Fiber Connectors: Why the 8° Angle Matters
It is the 8-degree angle on the end of the green connector. In this article, we will explain why that small angle is so important for your network''s stability and how to choose the right one for
View moreLaser Diodes & VCSEL
High-power CW/pulsed laser diodes (808nm–1550nm) and VCSEL arrays for 3D sensing, LIDAR, and optical interconnects.
Silicon Photonics & CPO
Co-packaged optics engines, silicon photonics ICs, and optical I/O solutions for high-density switches and AI clusters.
Optical Transceivers & AOCs
400G/800G QSFP-DD/OSFP modules, active optical cables, and custom optical engines for data center interconnects.
Laser Drivers & CDR
Low-jitter laser drivers, integrated CDR circuits, and linear TIAs for coherent optics and short-reach links.