High Quality Customized Fiber Array Units from China Suppliers - Factory Options Available for Various Specifications
Product Introduction
A Fiber Array Unit (FAU) is a key optical component that aligns and packages multiple optical fibers in a precise, parallel arrangement for high-performance fiber-optic connections. It integrates a bundle of optical fibers into a compact, planar array with uniform spacing between fiber cores. Its primary role is to enable efficient light signal transmission between fibers and other optical devices (e.g., PLC splitters, optical transceivers, or waveguides) by ensuring accurate alignment.
Key Design & Components
Optical Fibers
The core element, typically single-mode or multi-mode fibers, arranged in a linear or 2D pattern.
Substrate
A rigid base (often silica, glass, or ceramic) with precision grooves to fix fiber positions, ensuring consistent pitch (common spacing: 127 μm or 250 μm).
Cladding & Protection
Covers the fiber bundle to prevent physical damage and maintain alignment stability.
End-Face Treatment
Fibers are polished (e.g., PC or APC polish) to minimize insertion loss and reflectivity at the connection interface.
Critical Features
- High Precision Alignment: Fiber cores are positioned with micron-level accuracy, reducing signal loss from misalignment.
- Compact Size: Packages dozens or hundreds of fibers in a small footprint, ideal for space-constrained optical systems.
- Low Insertion Loss: Typically <0.3 dB per connection, preserving signal integrity.
- Mechanical Stability: Resistant to vibration, temperature changes (-40℃ to +85℃), and environmental stress, ensuring long-term reliability.
- Scalability: Available in various configurations (e.g., 1×12, 1×24, 2×32) to match different fiber count requirements.
Typical Applications
Passive Optical Networks (PONs)
Paired with PLC splitters for mass fiber signal distribution in FTTH (Fiber-to-the-Home) systems.
Optical Transceivers & Modules
Enables parallel optical communication (e.g., 40G/100G Ethernet) by connecting multiple fibers to photonic integrated circuits (PICs).
Test & Measurement Equipment
Used in fiber optic test setups to simultaneously test multiple fibers for insertion loss, return loss, or signal quality.
Data Centers
Supports high-density fiber connections between servers, switches, and storage systems, improving network bandwidth and scalability.
Frequently Asked Questions
A Fiber Array Unit (FAU) is a high-precision optical component that aligns and packages multiple optical fibers in a parallel arrangement. It is designed to facilitate efficient light transmission between optical fibers and devices like PLC splitters, transceivers, or waveguides.
An FAU is composed of optical fibers (single-mode or multi-mode), a rigid substrate (made of silica, glass, or ceramic with precision grooves), a protective cladding layer, and highly polished end-faces (PC or APC polish) to minimize signal loss.
FAUs are engineered for high-precision alignment, resulting in a low insertion loss that is typically less than 0.3 dB per connection, which helps preserve overall signal integrity.
Due to their robust mechanical stability and material composition, FAUs can operate reliably under harsh environmental conditions with a temperature range of -40℃ to +85℃.
They are widely used in Passive Optical Networks (PONs) for FTTH, optical transceivers for high-speed Ethernet (40G/100G), optical test and measurement equipment, and high-density fiber connections within data centers.
FAUs commonly feature precision-spaced fiber cores with standard pitch distances of 127 μm or 250 μm, and they are scalable into various channel configurations such as 1×12, 1×24, and 2×32.