1. Product Title

PM AAWG Module – 32 to 96 Channel C-Band 50/100/150 GHz DWDM

2. Product Overview

GracyFiber PM AAWG Module is a polarization-maintaining Arrayed Waveguide Grating module based on planar lightwave circuit (PLC) and silica waveguide technology. It is designed to multiplex or demultiplex multiple DWDM wavelengths across the C-band from 1525 to 1565 nm.

3. Key Features

• Up to 96 DWDM channels
• C-band operation: 1525–1565 nm
• ITU Grid center wavelengths from C13 to C64, or customized
• Channel spacing options:
  • 50 GHz / 0.4 nm
  • 100 GHz / 0.8 nm
  • 150 GHz / 1.2 nm
• Flat-top and Gaussian filter options
• Integrated PM1550 fiber
• Low port insertion loss and high channel isolation
• Compact module and 1U rack-mount configurations
• C-band ITU Grid compatibility
• Environmental reliability

The supplied product document confirms channel counts up to 96 and 50/100/150 GHz spacing, together with 1U rack-mount or housing configurations.

4. Applications

• Coherent Optical Transport – 100G / 400G / 800G DWDM Systems
• Data Center Interconnect (DCI)
• Dense Optical Communication Networks
• Optical Amplifier and EDFA Systems
• Optical Test & Measurement
• Polarization-Sensitive Optical Platforms

5. FAQ

What is a PM AAWG Module?

A PM AAWG Module is a polarization-maintaining Arrayed Waveguide Grating device used to multiplex or demultiplex multiple wavelength channels. This GracyFiber product is based on PLC and silica waveguide technology and operates in the C-band.

How many channels are available?

The supplied specifications define channel counts from 32 to 96 channels, depending on channel spacing:

• 150 GHz: 32 / 40 channels
• 100 GHz: 32 / 40 / 44 / 48 / 60 channels
• 50 GHz: 80 / 88 / 96 channels

What channel spacings are available?

Available channel spacing options are:

• 150 GHz (1.2 nm)
• 100 GHz (0.8 nm)
• 50 GHz (0.4 nm)

What is the difference between Flat-Top and Gaussian AAWG filters?

The supplied product specification provides both Flat-Top and Gaussian filter configurations. The 50 GHz product family includes both filter types, with different passband, insertion-loss, ripple, isolation, and extinction-ratio specifications. The required option should therefore be selected according to the system's channel filtering requirements.

Can the center wavelength and connector be customized?

Yes. The specification lists ITU Grid C13–C64 or customized center wavelengths and LC/UPC or customized connectors.

6. Technical Specifications

General Specifications

Channel Configuration

The supplied overview also identifies 50 GHz as the minimum spacing and up to 96 channels as the maximum channel count.

Optical Performance by Configuration

Connector Impact on Optical Specifications

The supplied specification states that the optical values above are specified for devices without connectors.

For devices fitted with connectors:

• Insertion Loss: +0.3 dB
• Return Loss: -5 dB
• Extinction Ratio: -2 dB

The specification also states that the PM fiber and connector key are aligned to the slow axis, while the fast axis is blocked.

7. Configuration & Customization Options

Channel Count

Available according to channel spacing:

150 GHz

• 32CH
• 40CH

100 GHz

• 32CH
• 40CH
• 44CH
• 48CH
• 60CH

50 GHz

• 80CH
• 88CH
• 96CH

Channel Spacing

• 50 GHz / 0.4 nm
• 100 GHz / 0.8 nm
• 150 GHz / 1.2 nm

Filter Profile

• Flat-Top
• Gaussian

Gaussian filtering is documented for the 50 GHz configuration.

Center Wavelength

• ITU Grid C13–C64
• Customized center wavelength

PM Fiber

• PM1550 Fiber

Other PM fiber types: [Need confirmation]

Fiber Protection

• 250 µm fiber
• 900 µm loose tube

Connector

• LC/UPC
• Customized connector

Packaging

Documented dimensions:

• 120 * 70 * 11 mm
• 482 * 250 * 44 mm
• 482 * 230 * 44 mm

The product description also confirms compact 1U rack-mount or housing options.

8. Detailed Product Description

The GracyFiber PM AAWG Module is designed for dense wavelength multiplexing and demultiplexing in optical systems that require both high channel density and polarization-maintaining fiber interfaces.

The module uses Arrayed Waveguide Grating technology implemented on a silica planar lightwave circuit. Multiple wavelength channels are routed through the AWG structure according to their center wavelengths, allowing several optical channels to be combined onto a common optical path or separated into individual channel ports.

The product operates across the 1525–1565 nm C-band, with center wavelengths based on the ITU grid from C13 to C64 or customized according to the required configuration.

Three channel-spacing families are documented. The 150 GHz version supports 32 or 40 channels, while the 100 GHz configuration extends to 60 channels. For higher-density DWDM systems, the 50 GHz family supports 80, 88, or 96 channels.

Different optical filter profiles are also available. Flat-top filtering is provided across the documented spacing families, while a Gaussian configuration is available for 50 GHz systems. Because the two filter profiles have different passband, insertion-loss, ripple, isolation, and extinction-ratio characteristics, the appropriate configuration can be selected according to system filtering requirements.

The PM AAWG incorporates PM1550 fiber pigtails for polarization-sensitive optical architectures. The supplied specification further defines alignment of the PM fiber and connector key to the slow axis.

Package options include a compact module as well as rack-mount housings, allowing the device to be integrated into optical transmission, DCI, amplifier, laboratory, and other polarization-sensitive systems.

9. Application Scenario

Application 1 — Coherent 100G / 400G / 800G DWDM Transport

Coherent optical transport systems use multiple closely spaced wavelength channels to increase transmission capacity over available fiber infrastructure.

The PM AAWG Module can multiplex or demultiplex these C-band channels with 50, 100, or 150 GHz spacing, while the PM fiber interface supports systems where polarization characteristics must be controlled.

Coherent 100G, 400G, and 800G DWDM systems are explicitly identified as applications in the supplied documentation.

Application 2 — Data Center Interconnect

DCI systems may use dense C-band wavelength multiplexing to transport multiple optical channels between data center locations.

The 50 GHz configuration supports up to 96 wavelength channels, providing a high-density wavelength interface for DWDM-based interconnect architectures.

Application 3 — Optical Test & Measurement

Optical laboratories and production test systems may require stable wavelength separation or combination across the C-band.

The availability of multiple channel spacings, Flat-Top or Gaussian filtering, PM fiber pigtails, and compact or rack-mounted packaging allows the PM AAWG Module to be integrated into polarization-sensitive optical test platforms.

10. Why GracyFiber

GracyFiber supplies passive optical components and fiber-optic assemblies for optical communication, photonics, wavelength management, and polarization-sensitive systems.

Relevant product capabilities include:

• PM Optical Components
• PM WDM Components
• PM Couplers
• PM Circulators
• PM Fiber Arrays
• AAWG Modules
• CWDM / DWDM Components
• Fiber Arrays and FAUs
• MPO/MTP Optical Interconnects

For this PM AAWG product family, documented configuration options cover channel spacing, channel count, filter profile, ITU center wavelength, PM fiber, connector type, fiber protection, and package format.

11. Related Products

12. Call to Action

Need a PM AAWG Module for a DWDM, coherent transport, DCI, or polarization-sensitive optical system?

Send GracyFiber your required:

• Channel count
• Channel spacing
• Center wavelength / ITU channels
• Flat-Top or Gaussian filter
• Target insertion loss
• Required isolation
• Extinction ratio
• PM fiber requirements
• Fiber coating
• Connector type
• Package format
• Application

GracyFiber can review the required PM AAWG configuration before quotation.