10GBASE DWDM SFP+

 

Item Spotlights

● Hot Pluggable SFP+ Form Factor

● LC Duplex Connector Transceiver Module

● DWDM EML Transmitter and APD Receiver

● Compliant with IEEE 802.3ae, SFF-8472, SFF-8431 and SFP+ MSA Ethernet Standard

● Max Power consumption < 1.5W

● Power Supply 3.3V

● Compliant with RoHS Environmental Standard (Lead-free)

● Class1/1M Standard Products, Compliant with IEC60825-1 Requirements

● Compliant with Telcordia(bellcore)GR-468-CORE Reliability

● Compliant with EMI and ESD Requirements

 

Description

Compatible	10GBASE DWDM SFP+	Vendor Name	FB-LINK
Form Factor	SFP+	Max Data Rate	10.3125Gbps
Wavelength	C21-C60	Max Cable Distance	40KM/80KM
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN/APD
TX Power	-1~+4dBm	Receiver Sensitivity	＜-16dBm/-23dBm
Powerbudget	6.2dB	Receiver Overload	0.5dBm
Power Consumption	≤1.5W	Extinction Ratio	＞6dB
DDM/DOM	Supported	Commercial Temperature Range	0 to 70°C (32 to 158°F)
Protocols	IEEE 802.3ae, SFF-8472, SFF-8431, SFF-8432, SFP+ MSA Compliant, CPRI, eCPRI	Warranty	3 Years

 

 

On ITU grid in C-band

Channel	Frequency (THz)	Wavelength (nm)	Channel	Frequency (THz)	Wavelength (nm)
H60	196.05	1529.163	C60	196	1529.553
H59	195.95	1529.944	C59	195.9	1530.334
H58	195.85	1530.725	C58	195.8	1531.116
H57	195.75	1531.507	C57	195.7	1531.898
H56	195.65	1532.290	C56	195.6	1532.681
H55	195.55	1533.073	C55	195.5	1533.465
H54	195.45	1533.858	C54	195.4	1534.250
H53	195.35	1534.643	C53	195.3	1535.036
H52	195.25	1535.429	C52	195.2	1535.822
H51	195.15	1536.216	C51	195.1	1536.609
H50	195.05	1537.003	C50	195	1537.397
H49	194.95	1537.792	C49	194.9	1538.186
H48	194.85	1538.581	C48	194.8	1538.976
H47	194.75	1539.371	C47	194.7	1539.766
H46	194.65	1540.162	C46	194.6	1540.557
H45	194.55	1540.953	C45	194.5	1541.349
H44	194.45	1541.746	C44	194.4	1542.142
H43	194.35	1542.539	C43	194.3	1542.936
H42	194.25	1543.333	C42	194.2	1543.730
H41	194.15	1544.128	C41	194.1	1544.526
H40	194.05	1544.924	C40	194	1545.322
H39	193.95	1545.720	C39	193.9	1546.119
H38	193.85	1546.518	C38	193.8	1546.917
H37	193.75	1547.316	C37	193.7	1547.715
H36	193.65	1548.115	C36	193.6	1548.515
H35	193.55	1548.915	C35	193.5	1549.315
H34	193.45	1549.715	C34	193.4	1550.116
H33	193.35	1550.517	C33	193.3	1550.918
H32	193.25	1551.319	C32	193.2	1551.721
H31	193.15	1552.122	C31	193.1	1552.524
H30	193.05	1552.926	C30	193	1553.329
H29	192.95	1553.731	C29	192.9	1554.134
H28	192.85	1554.537	C28	192.8	1554.940
H27	192.75	1555.343	C27	192.7	1555.747
H26	192.65	1556.151	C26	192.6	1556.555
H25	192.55	1556.959	C25	192.5	1557.363
H24	192.45	1557.768	C24	192.4	1558.173
H23	192.35	1558.578	C23	192.3	1558.983
H22	192.25	1559.389	C22	192.2	1559.794
H21	192.15	1560.200	C21	192.1	1560.606

 

The exponential growth of data traffic demands innovative solutions for network infrastructure. Dense Wavelength Division Multiplexing (DWDM) has emerged as a game-changing technology, enabling multiple data streams to coexist on a single fiber strand. Optical transceivers equipped with DWDM capabilities represent a crucial advancement in addressing bandwidth challenges while maximizing existing fiber infrastructure investments.

Why DWDM Matters for Network Infrastructure

Traditional networking approaches often require laying additional fiber cables to meet growing capacity demands-an expensive and time-consuming process. DWDM-enabled optical transceivers solve this challenge elegantly by multiplexing dozens of wavelengths onto existing fiber, effectively multiplying capacity without new cable installations. This technology proves particularly valuable for metropolitan area networks, enterprise backbones, and telecommunications providers managing increasingly complex traffic patterns.

Key Advantages of DWDM-Based Optical Transceivers

Scalability Without Infrastructure Overhaul Organizations can incrementally add capacity by deploying additional wavelengths rather than installing new fiber routes. This approach significantly reduces capital expenditure while maintaining flexibility for future growth.

Extended Reach Capabilities Advanced modulation techniques and high-quality components enable transmission distances reaching 80 kilometers or more without signal regeneration. This extended reach eliminates intermediate equipment in many deployment scenarios, simplifying network architecture.

Protocol Flexibility Modern optical transceivers support multiple protocols simultaneously, including Ethernet, Fibre Channel, CPRI for mobile fronthaul, and SONET/SDH for legacy systems. This versatility simplifies network consolidation and reduces equipment diversity.

Energy Efficiency Despite handling multiple wavelengths, DWDM optical transceivers maintain low power consumption profiles, typically under 1.5 watts per module. This efficiency contributes to reduced operational costs and supports green networking initiatives.

Critical Deployment Considerations

Channel Planning and Wavelength Management The ITU-T G.694.1 standard defines the C-band grid spanning from approximately 1529nm to 1561nm, with channels spaced at 100GHz or 50GHz intervals. Proper channel planning prevents interference and ensures optimal system performance. Network architects must coordinate wavelength assignments across the entire DWDM system to avoid conflicts.

Link Budget Calculations Successful deployments require careful attention to optical power budgets. Factors including fiber attenuation, connector losses, splicing losses, and dispersion compensation must be accounted for. High-quality optical transceivers with sufficient transmit power and receiver sensitivity margins ensure reliable operation across varying environmental conditions.

Temperature Management Commercial-grade modules typically operate from 0°C to 70°C, suitable for controlled environments. Extended or industrial-grade optical transceivers may be necessary for outdoor cabinets, cell tower installations, or harsh industrial environments where temperature extremes occur.

Application Scenarios

5G Fronthaul Networks The transition to 5G architecture creates enormous demand for fronthaul connectivity between radio units and baseband processing. DWDM optical transceivers supporting CPRI and eCPRI protocols enable efficient aggregation of multiple cell sites onto shared fiber infrastructure, reducing both fiber count and operational complexity.

Data Center Interconnection As enterprises distribute workloads across multiple data centers, high-bandwidth interconnects become critical. DWDM technology allows multiple 10G, 25G, or higher-rate connections to share fiber pairs, maximizing the value of inter-facility fiber assets.

Metropolitan Service Delivery Service providers use DWDM optical transceivers to deliver diverse services-internet access, private lines, cloud connectivity, and video distribution-over converged optical infrastructure. This consolidation reduces network complexity while improving service agility.

Integration Best Practices

Compatibility Verification While most modern optical transceivers follow industry standards, verifying interoperability with existing DWDM multiplexers, optical amplifiers, and management systems prevents integration challenges. Testing with actual equipment before large-scale deployment mitigates risk.

Digital Diagnostics Monitoring DOM/DDM functionality provides real-time visibility into transceiver performance including optical power levels, temperature, and voltage. Proactive monitoring through these digital diagnostics enables predictive maintenance and rapid troubleshooting.

Proper Handling and Installation Optical components require careful handling to prevent contamination and damage. Always use dust caps when modules are not installed, clean connector end-faces before mating, and avoid exceeding maximum insertion/removal cycles.

Future-Proofing Network Investments

Selecting optical transceivers with appropriate specifications ensures longevity as network demands evolve. Consider factors beyond immediate requirements: Will your network need to support additional protocols? Might transmission distances increase? Will environmental conditions change? Answering these questions guides selection of modules with adequate performance margins and feature sets.

The industry continues advancing DWDM technology with higher channel counts, increased data rates per wavelength, and improved coherent detection methods. Organizations investing in quality optical transceivers today position themselves to leverage these innovations through straightforward upgrades rather than complete system replacements.

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Frequently Asked Questions

What is the difference between CWDM and DWDM optical transceivers? CWDM (Coarse Wavelength Division Multiplexing) uses wider channel spacing (20nm) allowing up to 18 wavelengths, while DWDM employs narrow spacing (0.8nm or 0.4nm) supporting 40, 80, or more channels. DWDM provides greater capacity and longer reach but requires more precise wavelength control and typically costs more per channel. CWDM suits shorter distances with moderate channel requirements, whereas DWDM excels in high-capacity, long-haul scenarios.

Can I mix different vendors' optical transceivers in the same DWDM system? Yes, provided all modules adhere to relevant standards (IEEE 802.3ae, ITU-T G.694.1) and operate at compatible wavelengths. However, ensuring consistent performance characteristics-such as transmit power, dispersion tolerance, and chromatic dispersion compensation-across vendors improves system reliability. Always verify interoperability through testing when mixing vendors.

How do I calculate if a DWDM transceiver will work for my fiber span? Calculate total link loss by adding fiber attenuation (typically 0.2-0.25 dB/km at 1550nm), connector losses (0.3-0.5 dB each), splice losses, and any passive component losses. Ensure the transceiver's power budget (transmit power minus receiver sensitivity) exceeds total link loss by at least 3dB margin. Also verify chromatic dispersion stays within transceiver specifications-standard single-mode fiber exhibits approximately 17 ps/(nm·km) at 1550nm.

What does the "C21-C60" wavelength specification mean? This refers to ITU-T grid channels in the C-band (conventional band). The "C" designation indicates standard 100GHz channel spacing, while numbers represent specific wavelength positions. C21 corresponds to 1560.606nm, and C60 to 1529.553nm, providing 40 discrete wavelength options. Some systems use H-band (50GHz spacing) for doubled channel density.

Do DWDM optical transceivers require special switches or routers? No, DWDM optical transceivers insert into standard SFP+ ports on switches, routers, and media converters just like conventional modules. The DWDM functionality relates to optical wavelength, not electrical signaling. However, you need separate DWDM multiplexer/demultiplexer equipment to combine multiple wavelengths onto shared fiber and separate them at the receiving end.

What maintenance do optical transceivers require? Primary maintenance involves monitoring digital diagnostics for degradation trends in optical power or increasing error rates. Keep optical connectors clean using appropriate cleaning tools-contaminated connectors are the leading cause of optical link failures. Verify adequate cooling airflow around equipment, as elevated temperatures reduce transceiver lifespan. Most quality modules require no other maintenance during their operational life.

Can I use a 40km DWDM transceiver for a 20km link? Yes, longer-reach optical transceivers work perfectly fine on shorter distances. The receiver can handle the stronger optical signal from reduced fiber attenuation. However, verify the received power doesn't exceed the receiver's overload specification, typically around 0 to +0.5 dBm for APD-based receivers. If necessary, add inline optical attenuators to prevent receiver saturation.

What's the significance of hot-pluggable capability? Hot-pluggable modules can be inserted or removed while the host equipment remains powered and operational. This capability enables network maintenance, upgrades, and troubleshooting without service disruptions affecting other ports or modules. All modern SFP+ optical transceivers support hot-plugging, making them ideal for mission-critical networks requiring high availability.

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