

home

about us

products

Polarization Maintaining

Fiber Collimator

Fiber Optic Coupler

PBS/PBC

Optical Isolator

Optical Circulator

CWDM Multiplexer

DWDM Multiplexer

Variable Optical Attenuator

PM Patch Cord

MPO Patch Cord

Optical Polarizer

WDM & Optical Filtering

DWDM Mux Demux

WDM Filter

FWDM

UCWDM

O-Band WDM

Reflective WDM (High ISO)

Optical Fiber Array

PM Fiber Array

Mode Field Diameter Fiber Array

Lensed Fiber Array

2D Fiber Array

Custom Fiber Array

Network Visibility

Photonic Integration

High Density Optical Connectivity

Fiber Optic Components

events

news

contact us

quote

Good price online

products details

Home > Products >

WDM & Optical Filtering

>

4 Channel Compact CWDM Module 1271 1291 1311 1331nm Low Loss Fiber Optic Mux Demux FC UPC LC UPC

All Category

Polarization Maintaining

Fiber Collimator

Fiber Optic Coupler

PBS/PBC

Optical Isolator

Optical Circulator

CWDM Multiplexer

DWDM Multiplexer

Variable Optical Attenuator

PM Patch Cord

MPO Patch Cord

Optical Polarizer

WDM & Optical Filtering

DWDM Mux Demux

WDM Filter

FWDM

UCWDM

O-Band WDM

Reflective WDM (High ISO)

Optical Fiber Array

PM Fiber Array

Mode Field Diameter Fiber Array

Lensed Fiber Array

2D Fiber Array

Custom Fiber Array

Network Visibility

Photonic Integration

High Density Optical Connectivity

Fiber Optic Components

Contact Us

Ms. Joyce

info@gracyfiber.com

+86 19940976052

wechat

Joyce20000817

Chat Now

4 Channel Compact CWDM Module 1271 1291 1311 1331nm Low Loss Fiber Optic Mux Demux FC UPC LC UPC

4 Channel Compact CWDM Module 1271 1291 1311 1331nm Low Loss Fiber Optic Mux Demux FC UPC LC UPC

Detail Information

Product Description

Detail Information

Wavelength:

1271/1291/1311/1331nm

Channel Bandwidth:

±7nm

Insertion Loss:

1291/1331 < 1.2dB, 1271/1311 0.5~0.8dB

Dimensions:

44×25×6mm

Product Description

4 Channel Compact CWDM Module 1271 1291 1311 1331nm Low Loss Fiber Optic Mux Demux FC UPC LC UPC

Product Overview

This 4CH CCWDM module covers four CWDM wavelengths: 1271/1291/1311/1331nm, with a channel bandwidth of ±7nm. It features a compact silver aluminum case and a 0.9mm white loose tube design.

Core Product Characteristics

Parameters		Units	Specifications
			Minimum	Typical	Maximum
Wavelength (nm)		nm	CWDM 1271/1291/1311/1331
Number of Channels		nm	4
Channel Bandwidth		nm	-7	0	+7
Insertion Loss	1331→COM	dB	＜1.2dB
	COM→1311		0.5~0.8dB
	COM→1291		＜1.2dB
	1271→COM		0.5dB~0.8dB
Isolation	Adjacent Channels		≥25dB
	Non-Adjacent Channels		≥35dB
In-Band Ripple			≤0.5dB
PDL			≤0.5 Typ.0.25
TDL			≤0.5

Key Features

4CH CCWDM Wavelengths: 1271/1291/1311/1331nm
Channel Bandwidth: ±7nm
Insertion Loss: 1291/1331 < 1.2dB, 1271/1311 0.5~0.8dB
Adjacent Channel Isolation ≥ 25dB, Non-Adjacent Channel Isolation ≥ 35dB
COM end FC/PC, 1291/1331 end LC/PC, 1271/1311 end no connector
G657A1 fiber, 0.9mm white loose tube
Silver aluminum box packaging, dimensions approximately 44×25×6mm

Application Scope

CWDM coarse wavelength division multiplexing/demultiplexing systems
Compact optical module and optical device integration
Metropolitan area network and access network optical transmission
Data center and enterprise optical network interconnection
Multi-wavelength optical signal transmission systems
Optical communication equipment testing and wavelength management
Industrial and high-reliability fiber optic communication applications

Tags:

WDM Device

WDM Wavelength Division Multiplexing

Optical Filtering

Related Products

16CH 200G O-Band WDM PM DWDM Module Polarization Maintaining DWDM Mux Demux 1260nm 1380nm

16CH 200G O-Band WDM PM DWDM Module Polarization Maintaining DWDM Mux Demux 1260nm 1380nm

Chat Now

O-Band WDM Multiplexer 1260nm–1360nm LWDM MWDM DWDM 2CH 4CH 8CH 12CH 16CH With 1550nm Monitor Port

O-Band WDM Multiplexer 1260nm–1360nm LWDM MWDM DWDM 2CH 4CH 8CH 12CH 16CH With 1550nm Monitor Port

Chat Now

Polarization Maintaining DWDM Module 4CH 1310nm 200G O Band DWDM Module For PON Networks

Polarization Maintaining DWDM Module 4CH 1310nm 200G O Band DWDM Module For PON Networks

Chat Now

Gracyfiber O-Band WDM Multiplexer 1260nm-1650nm O-Band Wavelength Division Multiplexer

Gracyfiber O-Band WDM Multiplexer 1260nm-1650nm O-Band Wavelength Division Multiplexer

Chat Now

2CH 1310nm Optical Networking And Dense Wavelength Division Multiplexing DWDM Mux Demux 200G

2CH 1310nm Optical Networking And Dense Wavelength Division Multiplexing DWDM Mux Demux 200G

Chat Now

Joyce20000817

Quick Link

Home About Us Products News Contact Us

Quick Contact

Address

4/F,Building D ,ZhiXuanHan Yuanling Industrial Park,ShiYan Sub-District,Baoan District,Shenzhen City,Guangdong Province,China

Tel

86-0755-27204792

E-mail

info@gracyfiber.com

Joyce20000817

Our Newsletter

Subscribe to our newsletter for discounts and more.

Privacy Policy | Sitemap | China Good Quality Polarization Maintaining Supplier. Copyright © 2026 Shenzhen Gracyfiber Technology Co., Ltd. . All Rights Reserved.