LS-CW391G-80C 1390nm CWDM SFP module achieves 1Gbps transmission distances of up to 80km over single-mode fiber, using a DFB laser source and a PIN receiver, while its 0 to 70°C operating range covers standard commercial environments. Built-in digital optical monitoring function enables real-time access to Tx/Rx optical power, laser bias current, operating temperature, and supply voltage.
LINK-PP Part Number
LS-CW391G-80C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1390nm
Max Cable Distance
80km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-1 to +4dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-26dBm
Receiver Overload
-1dBm
EMC (Electromagnetic Compatibility)
Supported
DOM
Supported
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of LINK-PP LS-CW391G-80C 1G SFP
LINK-PP LS-CW391G-80C is a commercial-grade 1390nm CWDM SFP transceiver that bundles the essential capabilities for dependable long-haul fiber links. It integrates a 1Gbps data rate, 80km reach, SFP MSA compliance, duplex LC connectivity, and real-time DOM, all within a hot-pluggable mechanical design.
LINK-PP LS-CW391G-80C 1G SFP Optical Module
The hot-pluggable SFP footprint of this module allows field replacement without interrupting system operation. Its full compliance with the SFP MSA ensures seamless interoperability with a wide range of standard host equipment.
LS-CW391G-80C: 1 Gbps Connectivity for Enterprise Fiber Infrastructures
For enterprise fiber infrastructures, this SFP module supplies a clean 1Gbps transport channel, bridging various network segments from the main data center to wiring closets. Its bandwidth is more than adequate for day-to-day enterprise data exchanges and end-user connectivity needs.
LS-CW391G-80C Module with CWDM Technology for Fiber Efficiency
CWDM technology in this module maximises fibre utilisation by multiplexing several independent channels onto a single fibre pair. Operating on a designated CWDM grid channel, it reduces the number of physical fibres needed for network expansion.
LS-CW391G-80C Module with 1390nm Wavelength
The 1390nm channel offers low attenuation in standard single-mode fibre and maintains moderate dispersion over extended distances. This wavelength fits neatly into common CWDM plans, providing a cost-effective choice for metro and regional networks.
LS-CW391G-80C Module Supporting 80km Transmission
80km reach is achieved through a DFB laser transmitter and a sensitive PIN photodiode receiver, which together supply sufficient optical budget for the link. Such distance covers most city-wide connections and long campus backbones without requiring intermediate regeneration.
LS-CW391G-80C Module with Duplex LC Interface
Equipped with a duplex LC optical connector, this module offers a familiar and reliable interface for fiber patch cords and panels. The LC design ensures low insertion loss and easy polarity management, making it convenient for high-density wiring environments.
LS-CW391G-80C Module with DOM for Real-Time Monitoring
Real-time DOM gives network operators instant visibility into transmit/receive optical power, laser bias current, temperature, and supply voltage. These live measurements help detect early signs of fibre degradation and enable proactive maintenance before link failures occur.
LINK-PP LS-CW391G-80C 1G SFP Certification
The LS-CW391G-80C 1G SFP transceiver meets strict global safety and environmental standards, including ISO 9001, CE, RoHS, and FCC. It gives network operators peace of mind regarding product quality and regulatory compliance.
Each module goes through rigorous factory checks to test optical performance and signal stability under different temperatures. This ensures durable operation before reaching the customer.
LS-CW391G-80C Quality Certifications
Official accreditations prove that our manufacturing process and components adhere to international quality systems. They serve as reliable proof of long-term product efficiency.
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-CW391G-80C Certified for Reliable Host-Device Compatibility
Extensive hardware validation ensures smooth plug-and-play performance across major switch and router platforms. It eliminates packet drop risks and maintains continuous high-speed transmission.
Rigorous Testing Ensures Reliable SFP Performance
Every LS-CW391G-80C SFP module undergoes thorough factory checks to ensure stable data transmission across demanding network environments. Discover our full validation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure optical wavelength accuracy and spectral width to guarantee consistent signal power output.
Eye Pattern Test
Analyze signal waveform clarity and jitter performance to ensure optimal optical transceivers’ signal integrity.
Bit Error Rate Test
Evaluate data packet transmission accuracy over long distances to prevent packet loss under heavy network traffic.
Temperature Test
Check module operational stability across extreme temperature ranges to guarantee continuous network uptime.
Product Shipping for LINK-PP LS-CW391G-80C 1G SFP
We deliver LS-CW391G-80C 1G SFP modules safely through secure packaging and reliable global shipping. Orders are processed quickly for fast transit.
Anti-Static Protective Packaging
Prevent electrostatic discharge damage during handling by using anti-static protective packaging.
Shock-Resistant Transport Protection
Safeguard internal optical components from physical impacts using durable protective box enclosures.
Fast Order Processing and Dispatch
Accelerate order handling and warehouse dispatch to ensure lead times for network deployments.
Global Logistics and International Delivery
Partner with international express carriers to deliver products efficiently to worldwide customers.
LINK-PP LS-CW391G-80C 1G SFP Usage Demonstration
Insert the LS-CW391G-80C 1390nm CWDM SFP into a compatible switch port, then attach single-mode LC fiber cables. It is widely applied in CWDM metro access networks, enterprise campus links, and long-reach data center interconnections requiring efficient wavelength multiplexing over distances up to 80km.
LS-CW391G-80C 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-CW391G-80C 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:
No. This 1G CWDM SFP module is designed for single-mode fiber, not multi-mode fiber. For multi-mode links, you would need a different 1G SFP model designed for the required fiber type and distance. By
admin on
2026-03-12
A:
Yes, a sample order is a practical way to validate switch recognition, DOM readings, optical budget, and MUX/DEMUX channel matching before a larger rollout. Please confirm the required compatibility coding for the sample modules. By
admin on
2026-01-07
A:
Yes. A gradual drop in received optical power shown through DOM may indicate connector contamination, fiber bending, aging patch cords, or increasing splice loss. It can help engineers investigate the link before it fails completely. By
admin on
2025-11-28
A:
Yes. The LINK-PP LS-CW391G-80C supports 1.063Gbps Fibre Channel and can be used for long-distance SAN connections over single-mode fiber. Please also confirm the required vendor coding for your Fibre Channel switch model. By
admin on
2025-08-31
This is a practical 1390nm CWDM 1G SFP module for legacy aggregation switches that still need long-distance optical links. TX/RX power levels looked healthy from day one, and the Duplex LC interface made replacement straightforward.
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492584
444265
D***e
Italy
Verified
Purchase
5 .0
2026-06-19
Commissioned 20 units of these 80km 1390nm CWDM transceivers for a wireless cell site backhaul aggregation project. The primary requirement was stable physical layer signal integrity across long optical paths without active amplification.
The DFB laser stability on these optics is impressive — zero channel bleed-over to adjacent wavelengths (1370nm/1410nm) on our multiplexer. The duplex LC receptacles feature high-precision internal alignment sleeves, keeping insertion loss below 0.2dB per connection point. Operating in our climate-controlled indoor POP shelters, operating temperatures sit steadily around 36°C.
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character.
492584
444281
Z***n
Bangladesh
Verified
Purchase
5 .0
2026-06-11
We used the LS-CW391G-80C CWDM SFP module to extend a 1GbE connection between two campus buildings over single-mode fiber. The 1390nm channel matched our CWDM MUX setup, and both ends linked without any tuning or special configuration.
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character.
492584
444258
L***t
Brazil
Verified
Purchase
5 .0
2026-05-04
Solid 80km CWDM SFP optical transceiver. Replaced expensive first-party OEM modules on our distribution layer switches without any microcode rejections or port errors. Highly recommended! \ (•◡•) /
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492584
444275
G***k
France
Verified
Purchase
5 .0
2026-04-26
Good choice when you need an 80km CWDM SFP rather than a standard 1310nm gray optic. The DFB CWDM laser provides a clean fit for our passive CWDM transport design, and the price is reasonable for project quantities.
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492584
444261
R***k
Republic of Korea
Verified
Purchase
5 .0
2026-03-16
Installed a batch in a managed network supporting remote access cabinets connected back to an indoor aggregation room. Although the optics are commercial temperature rated, the modules are located in climate-controlled equipment areas, and the long single-mode runs are entirely within the 80km design target. The DFB transmitter and PIN receiver combination gave stable receive levels over the route, and the 1.25Gbps throughput is exactly right for the existing access layer. We also appreciate that the modules conform to SFP MSA and support DOM, since our NOC can trend optical levels instead of waiting for a service incident. This is the kind of low-drama optic operations teams want.
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492584
444255
J***e
Canada
Verified
Purchase
5 .0
2026-02-18
We added this 1390nm SFP module into our passive CWDM multiplexer grid to expand backhaul capacity without trenching new fiber. The duplex LC interface clicked firmly into the patch panel. Solid build quality!
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492584
444273
E***r
United Kingdom
Verified
Purchase
5 .0
2026-01-20
Used for a 1.25Gbps point-to-point link over an approximately 60km single-mode route. The optical margin was comfortable, and we have not seen packet loss or interface flaps after several weeks of production traffic.
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492584
444268
F***n
Norway
Verified
Purchase
4 .0
2026-01-07
Our package was held briefly by the carrier before final delivery, so the project schedule moved by two days. Once received, the Duplex LC optics passed our incoming inspection without any problems.
Please write comments with more than three
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492584
444283
D***x
Libyan Arab Jamahiriya
Verified
Purchase
5 .0
2025-12-06
Our operations team likes the DOM support because we can check temperature, voltage, laser bias, transmit power, and receive power remotely. It makes preventive maintenance much easier than using non-DOM optics.
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character.
492584
444267
K***h
Australia
Verified
Purchase
5 .0
2025-11-14
Good performance for the price point. Optical link came up cleanly at full gigabit speed through our patch bays. It’s hard to beat this optical power budget when working on tight IT budgets.
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character.
492584
444257
C***h
Sweden
Verified
Purchase
5 .0
2025-10-17
For a data-center-to-campus extension project, we needed a proven 1390nm CWDM transceiver that would work over existing single-mode fiber and LC patching. The LS-CW391G-80C did exactly that. We installed it as a 1.25Gbps uplink, confirmed the correct 1390nm channel through the passive CWDM infrastructure, and monitored DOM values through our normal network-management workflow. No special configuration was needed beyond selecting the correct compatibility version during procurement. It is a good fit for enterprise backbone, metro Ethernet, and indoor telecom-room applications where a 1G CWDM 80km SFP is required.
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character.
492584
444280
H***r
United States
Verified
Purchase
5 .0
2025-09-30
We used this 1390nm 1G CWDM transceiver for a remote equipment-room uplink. Installation took only a few minutes: clean the LC connectors, insert the optic, verify DOM readings, and bring the service online. Easy job.
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492584
444262
P***y
Mexico
Verified
Purchase
5 .0
2025-08-11
Our team needed to reuse a limited pair of single-mode fibers between a central data room and several remote utility sites. We selected multiple CWDM wavelengths and used the 1390nm LS-CW391G-80C for one of the longer 1.25G services. The Duplex LC format integrated directly with our fiber distribution frame, while the SFF-8472 digital diagnostics were available through the switch CLI for normal monitoring. We checked laser TX power, RX power, temperature, and voltage during commissioning, then set alert thresholds based on the measured baseline. The modules have performed consistently and saved us from installing additional outside-plant fiber.
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492584
444277
C***s
Iran, Islamic Republic of
Verified
Purchase
5 .0
2025-07-09
We installed these in a multi-wavelength campus backbone where fiber count is limited. The 1390nm CWDM channel helped us add another service without pulling new SMF. Link quality has been clean so far.
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492584
444256
I***r
Japan
Verified
Purchase
5 .0
2025-06-01
Great option for remote campus distribution nodes. These 1G CWDM SFP modules operate well within standard 0°C to 70°C commercial limits, keeping switch fan speeds low and stable.
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492584
444272
E***l
Spain
Verified
Purchase
4 .0
2025-05-06
The product boxes were slightly compressed in the shipping carton, likely from international handling. Fortunately, the antistatic bags and LC dust caps were intact, and all units worked perfectly.
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492584
444282
S***e
Netherlands
Verified
Purchase
5 .0
2025-04-19
We used these SFP transceivers for a phased refresh of older 1G CWDM uplinks in a regional enterprise network. Before rollout, we tested samples across our standard equipment inventory, validated DOM visibility, and measured optical power after the CWDM MUX, patch cords, and field fiber were included. The 1390nm channel stayed within the expected budget, and the modules did not show unusual temperature or bias-current behavior during burn-in. In production, they have supported normal enterprise traffic without errors or unexpected resets.
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492584
444260
F***h
Germany
Verified
Purchase
5 .0
2025-03-05
The module works well in a mixed-vendor environment after selecting the appropriate compatibility option. We tested it on several standard SFP ports used in enterprise and carrier access equipment, and the link negotiation was smooth.
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492584
444269
A***n
Argentina
Verified
Purchase
5 .0
2025-02-24
Bought a small batch for a regional fiber network refresh. The modules seated properly, reported DDM values, and stayed stable during normal daytime temperature changes in our indoor telecom room. Good experience overall.
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492584
444264
G***e
Singapore
Verified
Purchase
4 .0
2025-02-08
Tracking information updated a little slowly during the international leg of shipment. The actual product quality was good, and our 70km single-mode fiber test passed on the first attempt.
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492584
444259
N***n
India
Verified
Purchase
5 .0
2025-01-12
We deployed 10 LS-CW391G-80C CWDM modules in a campus fiber consolidation project, using 1390nm as one channel in an existing CWDM MUX/DEMUX system. The longest route was just under 70km including patch-panel and splice loss. DOM readings were consistent across the batch, and the reported receive power gave us enough margin to document the links before handover. After several weeks of carrying office, security, and management traffic, interface counters remain clean with no recurring link events. For indoor 1GbE CWDM backbone work, this is a dependable SFP option.
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