LS-CW351G-20C optical transceiver delivers optical connectivity up to 1.25Gbps over single-mode fiber spans up to 20km using 1350nm CWDM wavelengths. Built with a DFB laser, PIN photo detector, and live digital diagnostic monitoring function, this commercial-grade SFP module ensures stable and verifiable data links.
LINK-PP Part Number
LS-CW351G-20C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1350nm
Max Cable Distance
20km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-5 to 0dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-24dBm
Receiver Overload
-1dBm
EMC (Electromagnetic Compatibility)
Supported
DDM Support
Supported
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of LINK-PP LS-CW351G-20C 1G SFP
LINK-PP LS-CW351G-20C optical module brings together essential optical and electrical specifications to deliver dependable gigabit connectivity across commercial-grade environments. By integrating the standard SFP form factor, precise CWDM wavelength channel, extended reach, and digital diagnostics, it provides a versatile building block for single-mode fiber infrastructures.
LINK-PP LS-CW351G-20C 1G SFP Optical Module
The module incorporates a hot-pluggable SFP architecture that permits live card insertion or removal without disturbing active switch operations. Built in full conformance with the SFP Multi-Source Agreement (MSA), it guarantees uniform mechanical dimensions, pin configurations, and host-board interoperability across compliant network devices.
LS-CW351G-20C: 1 Gbps Connectivity for Fiber Capacity Upgrades
Delivering a sustained 1Gbps data rate, this module provides the essential throughput required for enterprise distribution links and regional access rings. Upgrading with this transceiver enables network operators to alleviate edge bottlenecks and expand overall fiber capacity with minimal capital investment.
LS-CW351G-20C Module with CWDM Technology for Fiber Efficiency
CWDM multiplexing allows multiple distinct light signals to share existing fiber strands by assigning each service an individual optical path. This design significantly multiplies bandwidth density on a single cable run, removing the cost of pulling extra physical cabling.
LS-CW351G-20C Module with 1350nm Wavelength
Emitting precisely at the 1350nm nominal channel, the internal DFB transmitter aligns with standard ITU-T 20nm spectral spacing plans. This accurate optical spectrum prevents adjacent-channel crosstalk when routing traffic through passive multiplexers and demultiplexers.
LS-CW351G-20C Module Supporting 20km Transmission
An engineered 20km optical link budget ensures clear signal delivery across extended single-mode fiber routes without intermediate amplification. These transmission margins effectively bridge inter-building campus routes and medium-span distribution links.
LS-CW351G-20C Module with Duplex LC Interface
The integrated duplex LC receptacle accommodates standard fiber patch cables to ensure rapid, tight mechanical latching. Its low-insertion-loss mating mechanism minimizes optical back-reflection while maximizing usable port density along switch faceplates.
LS-CW351G-20C Module with DDM for Real-Time Monitoring
Built-in Digital Diagnostics Monitoring (DDM) continuously tracks key operating metrics, such as temperature, voltage, laser bias current, and optical power. Fully compliant with SFF-8472 standards, it allows network administrators to easily monitor link health and troubleshoot issues in real time.
LINK-PP LS-CW351G-20C 1G SFP Certification
LINK-PP LS-CW351G-20C optical transceivers are manufactured under ISO 9001 quality management systems and fully meet international CE, RoHS, and FCC regulatory standards.
Each transceiver undergoes thorough optical and electrical testing to ensure consistent signal integrity and long-term operating stability.
LS-CW351G-20C Quality Certifications
Official compliance credentials validate that every module adheres to strict quality benchmarks, electromagnetic compatibility, and eco-friendly manufacturing requirements.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
LS-CW351G-20C Certified for Reliable Host-Device Compatibility
Extensive switch and router platform validation guarantees seamless plug-and-play recognition without communication errors across diverse vendor hardware.
Rigorous Testing Ensures Reliable SFP Performance
Comprehensive validation safeguards transceiver stability and optical precision across varied field conditions. Explore detailed testing standards at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure central wavelength alignment and monitor spectral width limits accurately.
Eye Pattern Test
Analyze high-speed optical waveform shape and confirm clean jitter margins.
Bit Error Rate Test
Check data packet integrity to prevent transmission errors over distance.
Temperature Test
Monitor electrical performance across the full commercial thermal range continuously.
Product Shipping for LINK-PP LS-CW351G-20C 1G SFP
Every LS-CW351G-20C optical transceiver is carefully prepared and packaged to guarantee safe arrival at your destination. Our streamlined fulfillment system coordinates with trusted global carriers to ensure prompt, reliable dispatch worldwide.
Anti-Static Protective Packaging
Shield internal electronic components against harmful electrostatic discharge during handling.
Shock-Resistant Transport Protection
Protect delicate optical mechanisms from severe mechanical vibration and impact.
Fast Order Processing and Dispatch
Prepare incoming purchase orders rapidly to minimize customer waiting times.
Global Logistics and International Delivery
Deliver products worldwide through reliable international freight and express services.
LINK-PP LS-CW351G-20C 1G SFP Usage Demonstration
Insert the LS-CW351G-20C module directly into the SFP port and connect duplex LC fiber to the 1350nm CWDM channel multiplexer. This straightforward deployment immediately expands fiber capacity across campus networks and enterprise backbones without laying extra physical optical lines.
LS-CW351G-20C Technical Support
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Pre-Sales Technical Consultation
Professional guidance to help you select the optimal LS-CW351G-20C module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Deployment & Installation Assistance
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
A:
It generally shouldn't cause issues on standard ITU-T G.694.2 grids. The CWDM grid uses wide 20nm channel spacing, and the module uses a stable DFB laser with a narrow spectral width that sits cleanly inside the 1350nm passband (typically ±6.5nm). As long as your passive multiplexer filters provide standard adjacent channel isolation (usually >30dB), adjacent channels like 1330nm or 1370nm should operate side-by-side with minimal optical crosstalk. By
admin on
2026-05-06
A:
The module follows the standard SFP MSA hot-pluggable form factor, meaning you can insert or remove it from an active switch cage without powering down the chassis or disrupting adjacent ports. By
admin on
2026-03-11
A:
Yes, slightly. The 1350nm wavelength sits closer to the water-peak absorption region (around 1383nm) found in older single-mode fiber. On modern low-water-peak fiber (G.652.D), the difference is negligible. On older fiber plant, attenuation at 1350nm might be around 0.4 dB/km rather than the typical 0.35 dB/km seen at 1310nm. Across a 10 to 15 km run, this usually only adds 1 or 2 dB of extra loss, which the module's 19 dB power budget can comfortably accommodate under normal conditions. By
admin on
2025-09-24
A:
The LS-CW351G-20C SFP module is designed to support both. Its data path accommodates line rates up to 1.25Gbps, which covers standard Gigabit Ethernet as well as 1.063Gbps Fibre Channel storage links. Just ensure your storage switch port is manually configured for 1G FC speed rather than auto-negotiating, as multi-speed auto-detection can sometimes be finicky on legacy SAN hardware. By
admin on
2025-04-15
Installed these CWDM modules in our company campus distribution cabinets. The fiber latches securely, and the link has been rock solid for two months straight.
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491723
462908
C***y
Germany
Verified
Purchase
5 .0
2026-03-28
Upgraded our commercial office park network by running multiple CWDM channels on one fiber pair. This 1350nm 1G SFP module works alongside our other channels without any interference. Gigabit traffic flows smoothly, and the heat stays very low inside our core rack. :D
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character.
491723
462919
W***s
Finland
Verified
Purchase
4 .0
2026-02-26
Good packing overall, although the delivery took one extra day beyond the original estimate. The LS-CW351G-20C modules were sealed well and all linked up normally.
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character.
491723
462905
J***n
Taiwan, Province of China
Verified
Purchase
5 .0
2026-01-09
Needed to expand network bandwidth between two hospital administration wings without running new fiber. This 20km SFP transceiver linked right up at 1.25Gbps, providing reliable, secure data transfer across our campus network. Duplex LC fit is solid. ;)
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character.
491723
462921
J***e
Spain
Verified
Purchase
5 .0
2025-12-05
Built a dedicated high-speed link between our corporate headquarters and a regional branch over leased dark fiber. Even going through several patch panels, the receiver gets a strong, clean signal with zero frame loss on daily file transfers.
Please write comments with more than three
character.
491723
462906
B***s
New Zealand
Verified
Purchase
5 .0
2025-10-31
Great CWDM transceiver for our commercial IP surveillance backhaul. Operating temperatures stay cool inside our indoor equipment rack even under steady load. :D
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character.
491723
462917
A***s
Ukraine
Verified
Purchase
5 .0
2025-08-27
We added this 1350nm CWDM optical module to link two office buildings across a 15km run. It linked up immediately at full Gigabit speed with zero dropped packets. :)
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491723
462909
D***n
Libyan Arab Jamahiriya
Verified
Purchase
5 .0
2025-08-11
This LS-CW351G-20C CWDM module worked nicely between two office buildings over installed SMF. Our route is much shorter than 20km, but the optical levels stayed comfortably within range. No packet loss during the initial migration.
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character.
491723
462923
C***t
New Zealand
Verified
Purchase
5 .0
2025-07-03
We used this 1350nm SFP transceiver to add another channel to an existing CWDM pair. The link came up right away on our managed Gigabit switch, and the DDM values looked sensible from day one. =D
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491723
462907
P***n
Bangladesh
Verified
Purchase
5 .0
2025-05-23
Added this 1G CWDM module to handle our commercial security camera feeds back to the central monitoring center. The 1350nm link negotiated instantly, handling continuous high-definition video traffic over 15km without any lag or dropped connections. Very reliable. =D
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character.
491723
462904
E***s
Brazil
Verified
Purchase
4 .0
2025-03-02
The transceivers were packed securely, but the courier tracking did not update for a couple of days. Once delivered, the modules were clean, labeled correctly, and ready to install.
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character.
491723
462910
A***y
Philippines
Verified
Purchase
5 .0
2025-01-17
We installed these 1350nm SFP modules to connect our main office server room to our disaster recovery facility 16km away. The DFB laser output is steady, and our network monitoring shows constant clean power levels with zero line interruptions during peak hours. :-)
Germany · English · EUR
