# 4,8,16,18 -Channel CWDM  Mux/Demux

**4,8,16,18-Channel** **CWDM Mux/Demux module**

  

DFT Coarse wavelength division multiplexer (CWDM Mux/Demux) utilizes thin film coating technology and proprietary design of non-flux metal bonding micro optics packaging. It provides low insertion loss, high channel isolation, wide pass band, low temperature sensitivity and epoxy free optical path.

****Features****

-   Low Insertion Loss
-   Wide pass band
-   High Channel Isolation
-   High Stability and reliability
-   Epoxy-free on Optical Path

  

****Applications****

-   Line Monitoring
-   WDM Network
-   Telecommunication
-   Cellular Application
-   Fiber Optical amplifier
-   Acess Network

  

****Specification****

**Parameter**

**4 Channel**

**8 Channel**

**16 Channel**

**18 Channel**

**Mux**

**Demux**

**Mux**

**Demux**

**Mux**

**Demux**

**Mux**

**Demux**

Channel Wavelength (nm)

1270~1610/1271~1611

Center wavelength Accuracy (nm)

±0.5

Channel Spacing (nm)

20

Channel Passband (@-0.5dB bandwidth (nm)

+/-7.5/+/-6.5

Insertion Loss (dB)

≤1.5

≤2.5

≤3.5

≤3.5

Channel Uniformity (dB)

≤0.6

≤1.0

≤1.5

≤1.5

Channel Ripple (dB)

0.3

Isolation (dB)

Adjacent

\>30

Non-adjacent

\>40

Isolation (dB)

Express with filter

\>30

Express without filter

\>12

Inertion Loss Temperature Sensitivity (dB/℃)

<0.005

Wavelength Temperature Shifting (nm/℃)

<0.002

Polarization Dependent Loss (dB)

<0.1

Polarization Mode Dispersion

<0.1

Directivity (dB)

\>50

Return Loss(dB)

\>45

Maximum Power Handling (mW)

300

Opterating Temperature (℃)

\-40~+85

Storage Temperature (℃)

\-40~+85

Package dimension (mm) (Glass tube)

Ø5.5\*25

Package dimension (mm) (Steel tube)

Ø5.5\*34

Package dimension (mm) (ABS box)

A: L100 x W80 x H10

B: L120 × W80 × H18

 C:L140 x W115 x H18

Specification may change without notice.

Above specification are for device without connectors.

  

****Package Dimension****

  ****![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.png_cwdm.png?v=1712332436)  ![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.pngcWDM2.png?v=1712332507)****

**A: 100X80X10 ABS box**

****![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.pngCWDM3.png?v=1712332656)****

****![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.pngCWDM4.png?v=1712332744)****

**B****: 1****2****0X80X1****8** **ABS box**

****![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.pngCWDM5.png?v=1712332890)****

****![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/1.pngCWDM6.png?v=1712332947)****

  

**C****: 1****4****0X****115****X18 ABS box**

****Ordering Information****

**CWDM**

**X**

**XX**

**X**

**XX**

**X**

**X**

**XX**

**Channel Spacing**

**Number of Channels**

**Configuration**

**1st Channel**

**Fiber Type**

**Fiber Length**

**In/Out Connector**

C=CWDM Grid

04=4 Channel

08=8 Channel

16=16 Channel

18=18 Channel

N=N Channel

M=Mux

D=Demux

O=OADM

27=1270nm

……

47=1470nm

49=1490nm

……

61=1610nm

SS=special

1=Bare fiber

2=900um

Loose tube

3=2mm Cable

4=3mm Cable

1=1m

2=2m

S=Specify

0=None

1=FC/APC

2=FC/PC

3=SC/APC

4=SC/PC

5=ST

6=LC

S=Specify

## Details

- **Price:** 0.0 USD
- **Vendor:** DFT TELECOM

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.00 USD | In stock |

## Images

- 4,8,16,18 -Channel CWDM  Mux/Demux

---

> Source: [DFT TELECOM ](https://dfttelecom.com/products/4-8-16-18-channel-cwdm-mux-demux)
> Updated: 2026-08-28