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CWDM supports up to 18 wavelength channels transmitted through a fiber at the same time.
To achieve this, the different wavelengths of each channel are 20nm apart.
CWDM technology offers a convenient and cost-efficient solution for shorter distances of up to 70 kilometers.
For distances between 40 and 70 kilometers, CWDM tends to be limited to supporting eight channels.
What is CWDM?
In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. This technique enables bidirectional communications over a single strand of fiber, also called wavelength-division duplexing, as well as multiplication of capacity.
CWDM full name is Coarse Wavelength Division Multiplexing.
As the name states, it is a form of multiplexed fiber optics, so CWDM networks can send simultaneous, two-way communication.
The term “coarse" refers to the wavelength spacing between channels.
CWDM utilizes laser signals that differ in increments of 20 nm. A total of 18 different channels are available — with a wavelength range from 1610 nm to 1270 nm — and 8 can be utilized in a single system. Since each channel is capable of data rates of 3.125 Gbps, the aggregate ability is 10 Gbps for any CWDM cable.
CWDM is used for lower cost, lower capacity (sub-10G) and shorter distance applications where cost is an important factor.
CWDM is ideal for fast and long networks that don’t need more expensive speeds. It’s also ideal for a gradual upgrade of older systems.
CWDM can be your flexible line that keeps your options open, but you can still utilize other cable designs where the need arises.
Product picture:
Features:
Channel number: 4CH, 8CH, 16CH, maximum 18CH.
Low Insertion Loss
High Isolation
Low PDL
Compact Design
Good channel-to-channel uniformity
Wide Operating Wavelength
From 1260nm to 1620nm
Wide Operating Temperature: -40°C to 85°C
High Reliability and Stability
ABS module box
Pigtail length: customized
Teminal connector: customized
Applications:
Passive Fiber Optic Networks
Metro/Access networks
WDM system
Fiber optical amplifier
CATV system
3G, 4G, 5G Mobile Fronthaul
Data Center
Specifications:
Item
4 Channel
Insettion Loss (dB)
≤1.5
CWDM Central Wavelengths [λc] (nm)
1270-1610 or 1271-1611
Passband (@-0.5dB bandwidth) (nm)
±7.5
Isolation
Adjacent Channel
> 30
Non-Adjacent Channel
> 45
Polarization Dependent Loss (dB)
< 0.10
Polarization Mode Dispersion (ps)
< 0.10
Return Loss (dB)
> 45
Directivity (dB)
> 50
Maximum Optical Power (mw)
500
Operating Temperature (℃)
-20 ~ +75
Storage Temperature (℃)
-40 ~ +85
Fiber Type
Single mode G652D or G657A
Cable diameter
0.9mm, 2.0mm, customized
Pigtail length
0.3m, 0.5m, 1.0m, customized
Terminal connector
LC/UPC, SC/UPC, customized
Lable
Customized
Package
Customized
Relation products:
OEM/ODM Service:
If you want to show your own brand LOGO on the goods such as cable, package bag, label or any where. Our OEM and ODM service is always ready to do it. Please contact with our sales team to get best support.
Packing:
According to Stardard Export Packing.
Carton box, wooden box, wooden pallet.
Shipping:
International express such as UPS, TNT, DHL, etc
Internatioal air: CA, AA, EA, etc
By sea
Standard export sea port: Shenzhen, Hongkong, Ningbo
Standard export airport: Shenzhen, Hongkong, Hangzhou, Shanghai
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2007
Total Annual:
4000000-5000000
Employee Number:
20~250
Ecer Certification：
Verified Supplier
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