- Brian
Harper Ross
Answered on 3:17 am
APC and PC/UPC are two types of polish styles for the ferrules inside the optical connectors. The ferrule is the housing for the exposed end of a fiber, designed to be connected to another fiber, or into a transmitter or receiver. The polish style affects the quality of the signal transmission and the return loss of the connector.
APC stands for Angled Physical Contact. It means that the ferrule endface is polished at an 8° angle, which causes the reflected light to reflect at an angle into the cladding instead of straight back toward the source. This reduces the return loss and improves the performance of the connector. APC connectors are usually green in color.
PC stands for Physical Contact. It means that the ferrule endface is polished with no angle but with a slight curvature for better core alignment. UPC stands for Ultra Physical Contact. It is an improvement of the PC polish with a finer surface finish and a lower return loss. PC and UPC connectors are usually blue in color.
Different applications may require different polish styles depending on the sensitivity to return loss and the wavelength range of the signal. Generally, APC connectors are preferred for single-mode fibers, especially for higher wavelengths (above 1500 nm) and longer distances. PC and UPC connectors are more common for multimode fibers and shorter distances.
Some examples of optical connectors that use APC polish are LC/APC, SC/APC, FC/APC, E2000/APC, etc. Some examples of optical connectors that use PC or UPC polish are LC/PC, SC/PC, FC/PC, ST/PC, MTRJ/PC, etc.
People Also Ask
Scale Out vs Scale Up: Insights into AI Network Architectures for 2028
As a leading specialist in optical-communication products and solutions, FiberMall is dedicated to providing cost-effective options for global data centers, cloud computing, enterprise networks, access networks, and wireless systems. With our expertise in AI-enabled communication networks, we’re the perfect partner for those seeking high-quality, value-driven optical-communication solutions. In this blog,
Understanding Optical Transceiver Modules: A Comprehensive Guide to Technical Parameters
In the world of fiber optic communications, optical transceiver modules play a pivotal role as interfaces that convert electrical signals to optical signals and vice versa. If you’re dealing with data centers, telecommunications, or AI networking, grasping the key parameters of an optical transceiver module is essential. This blog post dives deep
Spine-Leaf vs. Traditional Three-Tier Architecture: Comprehensive Comparison and Analysis
Introduction Evolution of Data Center Networking Over the past few decades, data center networking has undergone a massive transformation from simple local area networks to complex distributed systems. In the 1990s, data centers primarily relied on basic Layer 2 switching networks, where servers were interconnected via hubs or low-end switches.
AMD: Pioneering the Future of AI Liquid Cooling Markets
In the rapidly evolving landscape of AI infrastructure, AMD is emerging as a game-changer, particularly in liquid cooling technologies. As data centers push the boundaries of performance and efficiency, AMD’s latest advancements are setting new benchmarks. FiberMall, a specialist provider of optical-communication products and solutions, is committed to delivering cost-effective
The Evolution of Optical Modules: Powering the Future of Data Centers and Beyond
In an era dominated by artificial intelligence (AI), cloud computing, and big data, the demand for high-performance data transmission has never been greater. Data centers, the beating hearts of this digital revolution, are tasked with processing and moving massive volumes of data at unprecedented speeds. At the core of this
How is the Thermal Structure of OSFP Optical Modules Designed?
The power consumption of ultra-high-speed optical modules with 400G OSFP and higher rates has significantly increased, making thermal management a critical challenge. For OSFP package type optical modules, the protocol explicitly specifies the impedance range of the heat sink fins. Specifically, when the cooling gas wind pressure does not exceed
Related Articles
800G SR8 and 400G SR4 Optical Transceiver Modules Compatibility and Interconnection Test Report
Version Change Log Writer V0 Sample Test Cassie Test Purpose Test Objects：800G OSFP SR8/400G OSFP SR4/400G Q112 SR4. By conducting corresponding tests, the test parameters meet the relevant industry standards, and the test modules can be normally used for Nvidia (Mellanox) MQM9790 switch, Nvidia (Mellanox) ConnectX-7 network card and Nvidia (Mellanox) BlueField-3, laying a foundation for
Scale Out vs Scale Up: Insights into AI Network Architectures for 2028
As a leading specialist in optical-communication products and solutions, FiberMall is dedicated to providing cost-effective options for global data centers, cloud computing, enterprise networks, access networks, and wireless systems. With our expertise in AI-enabled communication networks, we’re the perfect partner for those seeking high-quality, value-driven optical-communication solutions. In this blog,
Understanding Optical Transceiver Modules: A Comprehensive Guide to Technical Parameters
In the world of fiber optic communications, optical transceiver modules play a pivotal role as interfaces that convert electrical signals to optical signals and vice versa. If you’re dealing with data centers, telecommunications, or AI networking, grasping the key parameters of an optical transceiver module is essential. This blog post dives deep
Spine-Leaf vs. Traditional Three-Tier Architecture: Comprehensive Comparison and Analysis
Introduction Evolution of Data Center Networking Over the past few decades, data center networking has undergone a massive transformation from simple local area networks to complex distributed systems. In the 1990s, data centers primarily relied on basic Layer 2 switching networks, where servers were interconnected via hubs or low-end switches.
AMD: Pioneering the Future of AI Liquid Cooling Markets
In the rapidly evolving landscape of AI infrastructure, AMD is emerging as a game-changer, particularly in liquid cooling technologies. As data centers push the boundaries of performance and efficiency, AMD’s latest advancements are setting new benchmarks. FiberMall, a specialist provider of optical-communication products and solutions, is committed to delivering cost-effective
The Evolution of Optical Modules: Powering the Future of Data Centers and Beyond
In an era dominated by artificial intelligence (AI), cloud computing, and big data, the demand for high-performance data transmission has never been greater. Data centers, the beating hearts of this digital revolution, are tasked with processing and moving massive volumes of data at unprecedented speeds. At the core of this
How is the Thermal Structure of OSFP Optical Modules Designed?
The power consumption of ultra-high-speed optical modules with 400G OSFP and higher rates has significantly increased, making thermal management a critical challenge. For OSFP package type optical modules, the protocol explicitly specifies the impedance range of the heat sink fins. Specifically, when the cooling gas wind pressure does not exceed