Products

PM DWDM

Key Features:

Dense ITU Grid Compatibility
Multiple Channel Configurations
Stable Polarization Performance
Environmental Stability
Low insertion loss, high channel isolation
100GHz / 200GHz channel spacing options

Applications:

DWDM systems, Metro and backbone networks
High-capacity coherent communication
Optical Amplifier Systems
Fiber Sensing & FBG Interrogation
Test & Measurement

Gracyfiber’s PM DWDM is a high-density device that combines or separates closely spaced wavelengths (100GHz/200GHz spacing) in the C-band — from 1525nm to 1565nm — while preserving polarization state. Built with precision-aligned PM fiber, it supports 2CH to 16CH configurations and works in telecom, sensing, laser systems, and quantum applications.

Available in compact modules or rack-mount formats, this component delivers low loss, sharp channel filtering, and stable performance — ideal for systems where both wavelength precision and polarization control are critical.

Parameter		Unit		Value
Operating Wavelength		nm		1260~1360,1525~1565
Center Wavelength		nm		ITU Grid(C11 ~C64) or Customized
Channel Spacing		–		100GHz (0.8nm), 200G(0.8nm）
Channel Passband		Min	nm	±0.11 (100GHz), ±0.25 (200GHz),
Channel		–		3Port		2CH	4CH	8CH	16CH
Insertion Loss		Max	nm	Pass	Ref	1.2	1.6	3.0	4.5
				0.8	0.6
Isolator	Adjacent	Min	nm	30 (Pass)		30	30	30	30
	Non-adjacent	Min	nm	15 (Ref)		40	40	40	40
Extinction Ratio		Min	nm	20		20	20	18	16
Operating Axis		–		Dual Axis or Pass Port Single Axis
Return Loss		Min	dB	50		45	45	40	40
Directivity		Min	dB	50
Power Handing		Max	mW	300
Fiber Type		–		PM 1300/ PM1550
Fiber Coating		mm		0.25 / 0.9/2.0/3.0mm Red/Blue loose tube
Fiber Length		cm		100
Connector		–		FC/APC,FC/UPC，or Customized
Dimensions (HxWxD)	250μm Bare Fiber	mm		φ5.5×35
	900μm Loose Tube	mm		φ5.5×38
	2mm/3mm Tube	mm		80×58×8,100×80×10,120×80×18
	Rack Mount	mm		155×129×29,482×250×44
Operating Temperature		°C		-5~65
Storage Temperature		°C		-40~85

Remark:

Above specifications are for devices without the connectors.
For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, and ER will be 2dB lower.
The PM fiber and the connector key are aligned to the slow axis, fast axis is blocked.