LS-CW311G-80C SFP module achieves 1.25Gbps line rates and 80km SMF transmission at the 1310nm CWDM grid, using a DFB laser and PIN detector with matched bandwidth. Real-time DDM functionality reports bias current, temperature, supply voltage, and optical power levels on demand, enabling proactive link supervision. The module’s wavelength accuracy and overall optical stability are maintained within defined limits across the full 0 - 70°C ambient range.
Brocade Part Number
LS-CW311G-80C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1310nm
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
DDM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Brocade LS-CW311G-80C Compatible LINK-PP 1.25G SFP
Brocade LS-CW311G-80C Compatible LINK-PP module is a commercial-grade 1310nm CWDM SFP module built for 1Gbps data rates over 80km single-mode fiber links. It adopts a standard hot-pluggable SFP footprint, meets SFP MSA requirements, and integrates a duplex LC port along with real-time Digital Diagnostic Monitoring (DDM) for operational visibility. This module operates reliably within a 0 to +70°C case temperature range and is tailored for regional backbone extensions.
The hot-pluggable SFP mechanical design allows field replacement without powering down the host chassis. Electrical and management interfaces are fully compliant with the SFP MSA, guaranteeing interoperability with a broad array of switches, routers, and media converters.
LS-CW311G-80C: 1 Gbps Connectivity for Regional Backbone Extensions
Its 1Gbps line rate delivers adequate throughput for connecting regional backbone nodes and aggregation points. This connectivity supports stable data exchange over metropolitan or campus ring topologies where moderate bandwidth and extended reach are required.
LS-CW311G-80C Module with CWDM Technology for Fiber Efficiency
By operating on the CWDM wavelength grid, this transceiver enables multiple optical channels to share one physical fiber pair. This multiplexing approach increases spectral utilization and defers costly new fiber installations.
LS-CW311G-80C Module with 1310nm Wavelength
The 1310nm window is selected for its low attenuation in single-mode fiber and its moderate chromatic dispersion behavior over the intended span. This wavelength choice simplifies link budgeting without requiring exotic dispersion-compensation techniques.
LS-CW311G-80C Module Supporting 80km Transmission
The 80km reach capability covers long physical spans between sites without requiring external optical amplifiers or regenerators. It relies on a DFB laser source to deliver sufficient optical power for sustaining link integrity over the full distance.
LS-CW311G-80C Module with Duplex LC Interface
The duplex LC interface provides a secure, latch-based connection to standard single-mode fiber patch cords. Its compact design ensures consistent physical mating and minimizes insertion loss during routine plug-and-play operations.
LS-CW311G-80C Module with DDM for Real-Time Monitoring
The Digital Diagnostic Monitoring (DDM) feature gives network administrators live access to key internal operating parameters. It tracks temperature, supply voltage, laser bias current, and optical Rx/Tx power levels to simplify fault detection and link supervision.
The LS-CW311G-80C CWDM 1G SFP transceiver meets strict international standards, including ISO 9001, CE, RoHS, and FCC certifications. These compliance standards ensure high product quality, operational safety, and environmental protection.
Every transceiver undergoes rigorous signal integrity, optical spectrum, and temperature testing before shipment. This comprehensive testing program guarantees stable and long-term network operation.
LS-CW311G-80C Quality Certifications
Official industry certifications confirm that the optical module complies with global safety and quality standards. These credentials demonstrate our commitment to reliable manufacturing quality.
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-CW311G-80C Certified for Reliable Host-Device Compatibility
The module is fully tested to ensure seamless performance across a wide range of major network switches and routers. This thorough verification prevents connection issues and ensures plug-and-play reliability.
Rigorous Testing Ensures Reliable SFP Performance
Every LS-CW311G-80C 1G SFP optical module undergoes comprehensive performance testing to ensure peak operational reliability. Learn more about our complete testing process at the LINK-PP Test Support Center.
Optical Spectrum Test
Verify exact central wavelengths and spectral width metrics using high-precision optical analyzers.
Eye Pattern Test
Analyze signal symmetry and jitter margins to confirm clean physical-layer transmission.
Bit Error Rate Test
Measure signal integrity and frame delivery accuracy under maximum network traffic loads.
Temperature Test
Evaluate thermal stability across extreme operating conditions to guarantee long-term field endurance.
Product Shipping for Brocade LS-CW311G-80C Compatible LINK-PP 1.25G SFP
We prepare each LS-CW311G-80C 1G SFP optical transceiver for safe transit. Efficient handling guarantees fast global delivery to your location.
Anti-Static Protective Packaging
Shield sensitive optical components against electrostatic discharge damage during transit.
Shock-Resistant Transport Protection
Safeguard the transceiver against physical impact during long-distance delivery routes.
Fast Order Processing and Dispatch
Streamline warehouse fulfillment procedures to ensure rapid shipment of your modules.
Global Logistics and International Delivery
Partner with reliable international carriers to provide secure worldwide shipping services.
Install the LS-CW311G-80C hot-swappable 1G SFP transceiver into a compatible switch, secure the LC fiber connection, and verify link activity. Operating across specific CWDM wavelengths, this module expands network capacity for enterprise backbones, metro Ethernet links, and multi-tenant data centers through optical wavelength multiplexing over long distances.
LS-CW311G-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-CW311G-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:
Yes, the module features full SFF-8472 compliant DDM support over the standard 2-wire serial interface. Your monitoring tools can poll calibrated real-time telemetry, including operating temperature, supply voltage, laser bias current, TX optical power, and RX optical power to monitor the status of links spanning up to 80km. By
admin on
2026-02-03
A:
Yes. This module is specified for a commercial case temperature range (0°C to +70°C). At an ambient of 35°C, the internal case temperature will remain within this limit (though not “well below”), and the DFB laser’s center wavelength is guaranteed to stay within 1310 ± 6.5nm across the entire operating temperature range per design. This ensures stable transmission through the CWDM passband without adjacent-channel crosstalk under normal operating conditions. By
admin on
2025-11-18
A:
This module is designed for standard single-mode fiber with a duplex LC connector. An actual 60km to 70km link is generally feasible thanks to its high-power DFB laser and sensitive PIN receiver. However, because real-world performance depends on total fiber attenuation, splice quality, and the insertion loss of your CWDM MUX/DEMUX units, we always recommend calculating your total channel loss before final deployment. By
admin on
2025-04-22
Please write comments with more than three
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492520
451220
P***h
Belgium
Verified
Purchase
5 .0
2026-06-02
The wavelength accuracy on the 1310nm band matches ITU-T grid specifications nicely. Channel isolation on our 8-channel Mux is clean with zero crosstalk detected on neighboring optical channels.
Please write comments with more than three
character.
492520
451229
O***r
Sweden
Verified
Purchase
5 .0
2026-05-11
Deployed these 80km CWDM SFP modules for a metro access upgrade; all channels locked at 1310nm with expected TX/RX levels. DDM telemetry is clean, and our monitoring tools read temperature and power without hiccups. Good value for 80km CWDM runs.
Please write comments with more than three
character.
492520
451222
X***y
Finland
Verified
Purchase
5 .0
2026-05-02
We used these in an outdoor cabinet for a small metro node, connecting to a central office over long-distance SMF. The Duplex LC interface mated cleanly with our patch cords, and the 80km spec gave us comfortable margin after accounting for connector and splice loss. Over two weeks, we monitored DDM data and saw no drift in output or wavelength. The commercial temp range was sufficient inside our ventilated enclosure, and the modules’ low power draw helped with thermal management.
Please write comments with more than three
character.
492520
451231
I***e
Philippines
Verified
Purchase
5 .0
2026-02-16
Tested on a 60km span with some splice losses; RX power stayed comfortably above sensitivity. The SFP form factor and low power draw make these easy to slot into dense switches.
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character.
492520
451226
B***e
Turkey
Verified
Purchase
4 .0
2026-02-08
Performance is excellent on our 50km CWDM link, but one module arrived with a slightly loose dust cap. Optics are fine, DDM works, just a small packaging thing.
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character.
492520
451221
G***n
Austria
Verified
Purchase
5 .0
2025-08-31
We ran a 7-day validation on a long-haul 1G CWDM link using two LS-CW311G-80C modules. The 1310nm wavelength stayed stable, and DDM telemetry integrated cleanly with our monitoring system. No packet loss or errors under heavy load, and the 80km SMF reach gave us comfortable margin. For commercial 0-70°C deployments, these are reliable and easy to manage.
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character.
492520
451230
N***s
Singapore
Verified
Purchase
5 .0
2025-05-19
Running these CWDM 1G SFP modules in a small data center interconnect over dark fiber. The 1.25Gbps rate is perfect for our legacy gear, and the Duplex LC SMF interface keeps cabling tidy. No errors after 48 hours of stress testing.
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492520
451224
D***n
Indonesia
Verified
Purchase
5 .0
2025-02-28
Used two units for offsite replication between enterprise storage nodes over dark fiber. Link latency is stable, throughput hits line rate cleanly, and the locking latch clicks firmly into the cage. Solid purchase.
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character.
492520
451227
S***g
Spain
Verified
Purchase
5 .0
2024-12-30
Swapped out older modules with these LS-CW311G-80C SFP modules on a 1G CWDM Mux/Demux chain. Wavelength alignment is spot-on, and we’re seeing consistent receiver sensitivity around -26dBm on long spans. No need to re-tune the Mux.
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character.
492520
451223
U***m
New Zealand
Verified
Purchase
5 .0
2024-12-12
Operating temperature has stayed steady around 38°C inside our standard air-conditioned server room racks. Power consumption is low and the 1.25G Ethernet transport has been rock solid since day one.
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character.
492520
451219
H***k
Russian Federation
Verified
Purchase
5 .0
2024-11-02
Nice balance of price and performance for 80km CWDM links. The modules report accurate temperature and voltage via DDM, which helps us catch any marginal fibers before they become a problem.
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