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Leading CWDM Supplier

 

 

CNCR is a global leading supplier providing telecom access network solutions. Since the company was successfully listed in 2011, CNCR has always adhered to independent research and development and technological innovation, and successfully passed the highest level CMMI5 certification in the global software field.

 

 
 

Active WDM Solution for 4G/5G Mobile Fronthaul
Semi-Passive WDM Solution for 4G/5G Mobile Fronthaul

Why Choose Us
1

Professional Engineer

500+ experts provides innovative solutions to ensure project quality and reliability.

2

Customizable R&D

Meet personalized needs, reduce costs, protect intellectual property rights, improve competitiveness, and enhance user experience.

3

Real-Time Support

7*24 hours global technical support service, quickly solve problems and improve user experience.

4

Certified Quality

CNCR products have passed various international certifications such as ISO, CE, ROHS, improve customers' market competitiveness.

 

Specification

 

 

Parameter

Unit

Specified Value

Optical port parameters of transmitter

Transmission distance

25G/20km

Wavelength

Nm

1271, 1291

Maximum wavelength shift

Nm

±6.5

Maximum -20dB spectrum width

Nm

1.0

Minimum side mode rejection ratio

DB

30.0

Maximum average transmission power

DBm

+3.0

Minimum average transmission power

DBm

0

Minimum OMA transmitted power

DBm

-1.2

Maximum average transmitted optical power of switching off

DBm

-30.0

Minimum extinction ratio

DB

3.5

Maximum Transmission and (TDP)

DB

2.0

3.0

3.5

3.0

5.5

6.0

Maximum RIN12OMA

DB/Hz

-130.0

Optical return loss tolerance

DB

20.0

Minimum optical return loss at the transmitter

DB

26.0

Optical port parameters of receiver

Receiving wavelength range

Nm

1250～1620

Maximum bit error rate a

-

5×10-5

Maximum average receiving sensitivity

DBm

-20

OMA reception sensitivity

DBm

-20

Minimum Overload Optical Power

DBm

-4.0

Minimum OMA Overload Optical Power

DBm

-4.0

Receive damage thresholdb

DBm

-3.0

Maximum received optical reflection

DB

-26.0

A Under the fully random error statistics, the bit error rate can ensure that the frame loss rate of the system is less than 6.2×10-10. When the random error statistics cannot be met, the bit error rate shall ensure that the frame loss rate of the system is less than 6.2×10-10
B The receiver is required to be able to tolerate continuous injection of this average optical power without causing damage

 

Advantages of CWDM
12 waves Passive CWDM Mux Demux
10g SFP+ 10km Passive CWDM for 4G fronthaul
5U Semi-active CWDM Mux For 4G/5G Fronthaul
2U Semi-active CWDM Mux

Cost-Effectiveness: CWDM are generally more cost-effective than Dense Wavelength Division Multiplexing (DWDM). The wider wavelength spacing in CWDM allows for simpler and less expensive transceiver designs.

 

Simplicity and Ease of Deployment: CWDM are easier to deploy and manage. The wider channel spacing reduces the complexity of optical components, making them more straightforward to manufacture, install, and maintain.

 

Scalability: CWDM provides a scalable solution, allowing network operators to start with fewer wavelengths and add more as needed.

 

Tolerance to Wavelength Drift: CWDM systems are more tolerant to wavelength drift, meaning transceivers do not need as precise control over the wavelength as those in DWDM systems.

 

Short to Medium-Haul Applications: CWDM is well-suited for short to medium-haul applications, such as metropolitan and regional networks.

 

Interoperability: CWDM adheres to industry-standard wavelength bands, ensuring interoperability among different vendors' equipment.

 

Lower Power Consumption: Many CWDM multiplexers are passive, meaning they do not require any power at all. This can be an important consideration for energy-efficient network design.

 

Upgradability: CWDM offer a path for future upgrades. Network operators can upgrade the system by adding additional wavelengths or transitioning to DWDM if higher capacity is needed, providing a smooth evolution as network demands increase.

 

Applications of CWDM
 

Healthcare

CWDM supports telemedicine and helps transfer large medical images between hospitals quickly.

Schools and Universities

CWDM helps connect multiple campuses and makes distance learning smoother.

Government Agencies

CWDM enhances emergency response systems and improves communication between offices.

TV Broadcasters

CWDM can distribute high-quality video content to support the growing demand for 4K and even 8K streaming.

Data centres

With CWDM, they can reduce the number of fibres needed while maintaining sufficient bandwidth.

Enterprise networks

CWDM allows businesses to expand their network capacity without laying new fiber, saving infrastructure costs.

 

Components of CWDM
 

CWDM Transceivers

These transceivers interact directly with devices on the network, such as routers, switches, and firewalls.

 

CWDM Multiplexers

This device combines different channels into one stream. This is the crux of CWDM.

 

CWDM Demultiplexer

This will perform the inverse operation of the MUX. This will take a stream of light and split them up.

 

Optical Fiber

Single-mode optical fiber is required to transmit the data. CWDM relies on the high travel capacity of single-mode fiber and its ability to send more data more reliably than multimode fiber.

 

Fiber Connectors

Appropriate fiber connectors, such as LC, SC, or MTP/MPO connectors, are used to connect the optical fiber to CWDM transceivers and other optical equipment.

 

CWDM Optical Attenuators

These are used to adjust the signal power of the light flowing through the CWDM system.

 

Difference between CWDM and DWDM

 

 

S. No.

CWDM

DWDM

1.

CWDM System having less than 8 active wavelengths per optical fiber.

DWDM system having more than 8 active wavelengths per optical fiber.

2.

It is defined by wavelengths.

It is defined by frequencies.

3.

It has lower capacity as compared.

It has higher capacity as compared.

4.

It has low cost.

It has high cost.

5.

It has short range communication distance.

It has long range communication distance.

6.

It uses wide range frequencies.

It uses narrow range frequencies.

7.

Its light signal is not amplified here.

Its light signal amplification can be used here.

8.

Its no. of active wavelengths per fiber fewer than 8.

Its no. of active wavelengths per fiber more than 8.

9.

It breaks the spectrum into big chunks.

It dices the spectrum into small pieces.

10.

It has more wavelength spacing.

It has less wavelength spacing as compared.

11.

It does not use cooling laser.

It uses cooling laser that upholds temperature tuning and thus, provides better performance, increased safety and extend the lifespan of DWDM system.

 

 
Usage Requirements
 
01/

Maintain proper 20nm channel spacing to prevent signal overlap and ensure optimal transmission quality.

02/

Use high-quality CWDM multiplexers and demultiplexers with low insertion loss to maintain signal integrity.

03/

Respect maximum transmission distances, which depend on factors such as optical power budget and data rate.

04/

Ensure that CWDM components are rated for the environmental conditions where they are deployed, especially for outdoor or industrial applications.

 

Order Process

 

Contact our sales team online via email at sarah.gu@cncr-it.com and provide the products and quantities you need to order and your customization requirements.

1

>>

Once we receive your custom requirements, we will contact you via email to confirm your order requirements.

2

>>

Once everything is confirmed, we will send you a quotation for your approval.

3

>>

Once we get your approval, we will start processing your custom order.

4

>>

Our technicians will control the quality during the production process.

5

>>

According to the delivery time, we will arrange shipment after receiving the remaining payment.

6

 

Payment & Delivery

 

 

Accepted Delivery Terms: FOB, CIF, FCA, EXW；

Accepted Payment Currency:

 USD;

Port:

 Xiamen ,China

Accepted Payment Type:

 T/T,L/C,Credit Card,PayPal,Western Union

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Video

 

 

 

Patents & Certificates

 

In pursuing innovation of cutting-edge technologies, CNCR has been publishing patents every year.

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Factory Environment

 
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FAQ

 

Q: Are you trading company or manufacturer?

A: We are manufacturer, having our own factories.

Q: Do you provide samples ? is it free or extra?

A: Sorry, we can not provide free samples

Q: How long is your delivery time?

A: Generally, if the goods are in stock, shipment can be arranged within 3 working days;
If the goods need to be mass produced, delivery time may be around 7-10 working days.

Q: How long i can get the feedback after we sent the enquiry?

A: We will reply you within 12 hours in working day.

Q: Can you do our design?

A: Of course, your customized design (OEM) is available.

Q: Can you make our design for the package?

A: Yes, please send us the design you need ,we will value the price and make the exact same package basing on your design.

Q: Is CWDM passive?

A: CWDM is a passive technology, meaning it does not require active components like amplifiers or repeaters to transmit signals. The passive nature of CWDM simplifies its deployment, reducing the need for additional power sources or complex infrastructure. This characteristic contributes to the cost-effectiveness and simplicity that make CWDM an attractive solution for various network applications.

Q: How many channels are there in CWDM?

A: CWDM typically supports a range of channels, each operating at a specific wavelength. The standard CWDM grid consists of 18 channels spaced at intervals of 20nm within the wavelength spectrum. These channels enable the simultaneous transmission of multiple data streams, expanding the overall capacity of the optical fiber and optimizing bandwidth usage.

Q: How do I connect to CWDM?

A: Connecting to a CWDM network involves several steps. First, ensure that your network equipment is compatible with CWDM technology. Acquire the appropriate CWDM transceivers for your devices, ensuring they match the specific wavelengths used in your CWDM system. Install the transceivers into the corresponding ports on your equipment. Finally, connect the devices using optical fibers, making sure to align the wavelengths correctly. Proper configuration and adherence to CWDM standards are crucial for a successful and efficient connection to a CWDM network.

Q: How does CWDM work?

A: CWDM connects optical fiber cables into a multiplexer (MUX) that combines several data streams onto different wavelengths of light for transmission as a single cohesive flow. These distinct wavelengths represent specific data channels and are selected from a standard grid of wavelengths. Data streams can originate from various sources, including computers, printers, data centers, and more.

Q: Can CWDM and DWDM be used together in a network?

A: It is possible to integrate CWDM and DWDM in a network to leverage their distinct strengths. This hybrid approach allows for flexibility, enabling organizations to optimize their network infrastructure based on varying demands. The compatibility of CWDM and DWDM makes it possible to create a well-rounded and efficient network.

We're well-known as one of the leading CWDM manufacturers in China since 1999, specialized in providing high quality customized products. Welcome to buy cheap CWDM for sale here from our factory. For price consultation, contact us.

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