Customized MUX/DEMUX FA Assemblies for 40G 100G Optical Transceiver - China Suppliers & Factory
AWG MUX/DEMUX (Arrayed Waveguide Grating Multiplexer/Demultiplexer) is a core passive photonic component that integrates wavelength division multiplexing (WDM) functionality on a planar lightwave circuit, enabling simultaneous transmission/reception of multiple optical signals over a single fiber.
Combines multiple optical signals of different wavelengths into one single fiber, maximizing fiber capacity.
Splits a combined multi-wavelength signal back into individual wavelength channels for separate processing.
Key Design & Core Components
Single-mode waveguides (typically 9/125 μm) carrying optical signals, with channel counts from 4 to 128+ for dense WDM.
Parallel waveguides with precisely controlled length differences, creating phase shifts that diffract light based on wavelength.
Two fan-shaped slab regions distributing light to the arrayed waveguides and collecting diffracted light to the outputs.
Silica glass or InP (Indium Phosphide) base hosting all waveguides to ensure dimensional stability and low optical loss.
Hermetic or semi-hermetic packaging with fiber pigtails/FA-MT connectors and thermal management for wavelength stability.
Critical Performance Traits
Typical Applications
Enables DWDM systems to multiply fiber capacity, supporting high-speed (10G/100G/400G) data transmission over hundreds of kilometers.
Used in data center interconnects (DCIs) and campus networks to consolidate fiber links, reducing cable complexity and cost.
Integrated into WDM transceivers (e.g., QSFP-DD, OSFP) for multi-wavelength parallel transmission, enhancing bandwidth per port.
Supports WDM-PON systems, enabling multiple users to share a single fiber with dedicated wavelengths.
Used to generate or analyze multi-wavelength optical signals for network validation and testing equipment.
Frequently Asked Questions (FAQ)
The primary function is to combine (MUX) multiple optical signals of different wavelengths into a single optical fiber for transmission, and split (DEMUX) the combined signals back into individual wavelengths at the receiving end.
An AWG consists of Input/Output Waveguides, Arrayed Waveguides (which create phase shifts), Slab Waveguides (for distributing and collecting light), and a PLC Chip Substrate (silica glass or InP base) housed in protective packaging.
AWG MUX/DEMUX devices typically feature an insertion loss of 3–6 dB in the C-band, polarization-dependent loss (PDL) of less than 0.3 dB, and high channel isolation of 30–40 dB to prevent crosstalk.
AWG devices maintain stable performance across a wide temperature range (-40℃ to +85℃). Wavelength drift is kept extremely low, typically less than 0.05 nm/℃, often managed via specialized thermal packaging.
They are widely used in long-haul and metro DWDM networks, data center interconnects (DCIs), high-speed optical transceivers (like QSFP-DD/OSFP), WDM-PON systems, and optical test and measurement equipment.