CWDM-SFP-1590 functions as a 1G CWDM SFP optical transceiver designed with a 1590nm DFB laser transmitter and PIN photodetector. This module facilitates long-reach data links up to 80km utilizing standard single-mode fiber. It also supports real-time digital diagnostic monitoring interfaces for proactive optical link management.
Cisco Part Number
CWDM-SFP-1590
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1590nm
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
Supported
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Cisco CWDM-SFP-1590 Compatible LINK-PP 1.25G SFP
Cisco CWDM-SFP-1590 Compatible LINK-PP module is a commercial-grade single-mode CWDM SFP transceiver with a hot-pluggable SFP footprint and SFP MSA compliance. It uses CWDM technology, a 1590nm wavelength, 80km transmission support, a Duplex LC interface, and DDM to fit long-distance enterprise and campus fiber links.
This optical module is designed with a hot-pluggable SFP+ footprint, so it can be installed or replaced without interrupting the whole system. It also complies with the SFP+ MSA, which helps it fit well with compatible switches, routers, and other network devices.
CWDM-SFP-1590: 1 Gbps Connectivity for Extended Campus Backbones
Operating at 1Gbps, this module is suitable for networks that need steady Gigabit transmission over long distances. It is a practical option for extended campus backbones, access networks, and other fiber links where reliable bandwidth is required.
CWDM-SFP-1590 Module with CWDM Technology for Fiber Efficiency
CWDM technology allows the module to transmit data on a specific wavelength while sharing the same fiber infrastructure with other channels. This helps improve fiber utilization and supports more cost-effective network expansion.
CWDM-SFP-1590 Module with 1590nm Wavelength
The 1590nm wavelength is part of the CWDM wavelength plan and is used to separate this channel from others in the same system. This makes it easier to build organized multi-channel networks and maintain clear signal routing.
CWDM-SFP-1590 Module Supporting 80km Transmission
With support for transmission distances up to 80km, this module is suitable for long-reach applications that go beyond normal short-distance fiber use. It is a strong match for links between buildings, remote sites, and wider-area network connections.
CWDM-SFP-1590 Module with Duplex LC Interface
The duplex LC interface offers a compact and widely adopted fiber connection style. By using separate ports for transmit and receive signals, it helps maintain a stable optical link and simplifies network installation and operation.
CWDM-SFP-1590 Module with DDM for Real-Time Monitoring
DDM gives network teams real-time access to key operating data such as temperature, voltage, bias current, and optical power. This makes maintenance easier, since users can monitor module status and spot potential issues before they affect the link.
Cisco CWDM-SFP-1590 Compatible LINK-PP complies with major global standards, including ISO 9001 manufacturing quality requirements as well as CE, RoHS, and FCC. These credentials verify that the optical transceiver meets strict safety, environmental, and regulatory criteria for worldwide deployment.
Every transceiver undergoes rigorous optical and electrical screening before leaving the production line. This strict testing process ensures stable signal integrity and dependable long-term field operation.
CWDM-SFP-1590 Quality Certifications
Official regulatory endorsements confirm that the module meets strict international environmental and safety standards. These industry credentials validate safe handling and eco-friendly manufacturing compliance.
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.
CWDM-SFP-1590 Certified for Reliable Host-Device Compatibility
Standardized communication protocols allow the module to integrate smoothly with diverse switch and router platforms. This verified hardware alignment prevents firmware mismatches and ensures dependable link establishment.
Rigorous Testing Ensures Reliable SFP Performance
Stringent factory inspections ensure seamless network deployment and long-term durability. Discover the complete testing methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Laser wavelength accuracy and spectral width are analyzed to maintain precise signal purity.
Eye Pattern Test
Oscilloscope waveforms check signal quality and timing margins to prevent data corruption.
Bit Error Rate Test
Continuous data transmission runs under stress conditions to verify zero packet loss.
Temperature Test
Extreme thermal conditions are applied to ensure functional stability in harsh environments.
Product Shipping for Cisco CWDM-SFP-1590 Compatible LINK-PP 1.25G SFP
Cisco CWDM-SFP-1590 Compatible LINK-PP module is shipped with care to help protect the module during transit. It also supports quick order dispatch and reliable global delivery.
Anti-Static Protective Packaging
The module is packed in anti-static material for safe handling.
Shock-Resistant Transport Protection
The package helps protect the module from impact during transport.
Fast Order Processing and Dispatch
Orders are handled quickly and shipped without delay.
Global Logistics and International Delivery
International delivery is available for customers in different regions.
This CWDM-SFP-1590 1G SFP CWDM module installs smoothly into network switches to link enterprise campuses and regional metro backbones. Operators manage active fiber channels easily by inserting the transceiver, connecting dual LC cables, and tracking live telemetry metrics for dependable data transmission.
CWDM-SFP-1590 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 CWDM-SFP-1590 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:
The module can operate up to 70°C case temperature, but we recommend checking the actual module case temperature and ensuring sufficient ventilation in the cabinet. By
admin on
2026-03-27
A:
Yes. It supports real-time DDM monitoring under SFF-8472, allowing compatible equipment to read information such as optical transmit power, receive power, temperature, voltage, and bias current. By
admin on
2026-02-06
A:
Yes. This LS-CW591G-80C SFP optical transceiver supports 1.063Gbps Fibre Channel, making it suitable for many 1G SAN and storage connectivity applications. By
admin on
2025-12-26
A:
It may be suitable, as this module supports transmission distances of up to 80km over single-mode fiber. However, 75km is close to the maximum distance, so the total link loss should be checked carefully. Please include fiber attenuation, connector and patch-panel loss, splice loss, and CWDM MUX/DEMUX insertion loss. By
admin on
2025-07-06
A:
Yes. The LS-CW591G-80C is a 1G CWDM SFP operating at 1590nm, so it can be installed in a matching 1590nm channel on a CWDM MUX/DEMUX. It is designed for duplex single-mode fiber links and supports transmission distances of up to 80km. By
admin on
2025-05-22
Perfect solution for expanding our campus fiber backbone without pulling new single-mode lines. The 1590nm optical wavelength slot on our passive CWDM multiplexer resolved without any adjacent channel crosstalk.
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492894
446280
F***g
Netherlands
Verified
Purchase
5 .0
2026-03-21
Replaced an aging OEM optic with this SFP CWDM 1590nm transceiver on our secondary uplink. Plugged in hot without a single link flap on adjacent switch ports. Truly plug-and-play. (•‿•)
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492894
446284
I***s
Russian Federation
Verified
Purchase
4 .0
2026-03-05
Solid optical transceiver for building cost-effective redundant CWDM links. Dust caps were slightly tight on the duplex LC optical receptacle, but the optical interface connection clicked in securely once seated.
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character.
492894
446278
S***n
South Africa
Verified
Purchase
5 .0
2026-01-09
We deployed the LS-CW591G-80C as part of an 18-channel CWDM transport upgrade between a main data room and several regional facilities. This specific 1590nm 1G CWDM SFP occupied the final channel in our wavelength plan and ran over approximately 73 km of OS2 single-mode fiber, including multiple patch panels and a CWDM MUX/DEMUX pair.
Before turnover, we checked DOM data against our optical test results. TX power sat within the stated -1 to +4 dBm range, while received levels remained comfortably above the -26 dBm sensitivity threshold. After a 30-day burn-in, there were no link flaps, packet drops, or increasing error counters. For a commercial 80 km SFP transceiver, it has been a dependable option.
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492894
446291
O***s
Singapore
Verified
Purchase
4 .0
2025-12-18
Good 1G 1590nm CWDM optic and the DDM readings were available as expected. Delivery took a little longer than our project schedule preferred, so order early if the deployment date is fixed. The modules arrived safely and worked correctly once installed.
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492894
446287
D***t
Brazil
Verified
Purchase
5 .0
2025-12-04
We integrated this 1G 80km CWDM module into our municipal fiber passive mux rack. DOM diagnostics display clean TX/RX dBm values without any weird offset errors. Smooth integration into our SNMP monitoring system.
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492894
446277
J***s
Thailand
Verified
Purchase
5 .0
2025-10-23
We picked up a batch of these 80km CWDM SFP modules for an enterprise campus ring interconnect spanning multiple municipal facilities. Physical layer validation on our OTDR and optical spectrum analyzer confirmed a very narrow spectral line width and a clean transmitter eye diagram. Duplex LC optical connectors mate firmly with standard single-mode patch cords without excessive mechanical play. In production, the hot-swap electrical isolation circuit works flawlessly — zero voltage fluctuations observed on adjacent switch line-card ports during live insertion. For enterprise-grade 1G CWDM deployment, this optic delivers exceptional optical power budget stability.
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492894
446290
K***w
Malaysia
Verified
Purchase
5 .0
2025-08-31
Our team tested these modules for a long-distance 1GbE aggregation ring serving small branch offices. We ran a controlled test using the LS-CW591G-80C at both ends, Duplex LC connectors, and a 1590nm CWDM passband through our existing optical filtering equipment. The modules established clean links without needing special handling beyond normal fiber cleaning and polarity checks.
The biggest advantage for us was SFF-8472 digital diagnostics. We can pull live temperature, voltage, transmit power, and receive power through the switch interface, then compare those readings with baseline commissioning values. That helps us catch dirty connectors or gradual fiber loss before users report a problem. Great fit for managed enterprise fiber networks.
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492894
446292
H***y
Norway
Verified
Purchase
5 .0
2025-07-25
This 1.25Gbps 80km CWDM optical transceiver worked well for a remote access-site uplink over single-mode fiber. The DFB transmitter and PIN receiver have been stable, with no CRC errors seen in our routine checks.
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492894
446286
T***r
Indonesia
Verified
Purchase
5 .0
2025-06-12
We used this 1590nm CWDM 80km SFP module for backhaul connectivity between an indoor network room and a remote aggregation location. The route includes legacy single-mode cable, several splices, and two cross-connect points, so our priority was optical margin rather than just reaching the distance target. The module maintained a stable receive level throughout testing, and the DDM information aligned with our handheld optical power meter closely enough for operational monitoring. It is a practical long-haul CWDM SFP for indoor telecom and enterprise deployments.
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492894
446293
M***s
Sweden
Verified
Purchase
5 .0
2025-05-19
Great price-to-performance ratio for long-distance 1G CWDM SFP optics. Optical receiver sensitivity is high enough to handle real-world patch panel splice losses across our 75km link. Highly dependable.
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492894
446279
R***n
Philippines
Verified
Purchase
5 .0
2025-02-28
Adding dedicated fiber strands between our two metro colocation facilities was cost-prohibitive, so we deployed these 1590nm CWDM 1G SFP modules to light up unused channels on our existing CWDM filter grid. The optical transceivers complied strictly with ITU-T G.694.2 wavelength grid tolerances, completely avoiding inter-channel bleeding into neighboring 1570nm and 1610nm optics. Both modules operate reliably within our 0°C to +70°C commercial temperature server rooms. EEPROM checksums and MSA coding are fully intact. A dependable, carrier-grade transceiver that saved us thousands in capital infrastructure expenditure.
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492894
446289
J***n
Australia
Verified
Purchase
5 .0
2025-01-15
Ordered a pair of these 1590nm CWDM SFP modules for a remote branch campus link spanning roughly 68km. Both transceivers locked onto the duplex LC fiber instantly, and the optical link attenuation came well within safe operating margins. Great budget saver.
Singapore · English · SGD
