Engineered specifically for CWDM infrastructures, the CWDM-SFP-1490 1G SFP utilizes a 1490nm optical wavelength to maximize fiber strand utilization over extended distances. The built-in DFB laser and PIN receiver combination enables stable signal integrity across single-mode fiber reaches up to 80km. Integrated digital optical monitoring (DOM) provides live tracking of optical power output, operating temperature, bias current, and voltage metrics.
Netgear Part Number
CWDM-SFP-1490
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1490nm
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 Netgear CWDM-SFP-1490 Compatible LINK-PP 1.25G SFP
Netgear CWDM-SFP-1490 Compatible LINK-PP module is a 1G SFP module that features an SFP compliant footprint, CWDM 1490nm wavelength, 80km transmission distance, duplex LC interface, and DOM support. It is built for long-haul campus interconnects and efficient fiber utilization through wavelength multiplexing.
This module offers a hot-pluggable SFP footprint for easy field replacement. It is compliant with SFP MSA and SFF-8472, ensuring broad compatibility with standard networking platforms.
CWDM-SFP-1490: 1 Gbps Connectivity for Long-Haul Campus Interconnects
The module delivers a 1Gbps data rate, suitable for connecting remote campus buildings or distributed enterprise sites. It is targeted at long-haul links where stable gigabit throughput is required over extended distances.
CWDM-SFP-1490 Module with CWDM Technology for Fiber Efficiency
CWDM technology enables the module to operate on a specific wavelength channel within a multiplexed system. This allows multiple transceivers at different wavelengths to share a single fiber pair, increasing overall fiber utilization.
CWDM-SFP-1490 Module with 1490nm Wavelength
The 1490nm wavelength is one of the standard CWDM channels defined by ITU-T G.694.2. It is used as the transmission carrier for this module, allowing it to be combined with other CWDM channels in the same network.
CWDM-SFP-1490 Module Supporting 80km Transmission
This optical transceiver supports optical links up to 80km over single-mode fiber. It provides sufficient optical power budget for typical long-haul campus or metro access deployments.
CWDM-SFP-1490 Module with Duplex LC Interface
The module is equipped with a duplex LC connector, which is the industry standard for single-mode fiber patch cords. This interface ensures straightforward connection to existing fiber plant without special adapters.
CWDM-SFP-1490 Module with DOM for Real-Time Monitoring
Digital Optical Monitoring (DOM) provides real-time readings of transmitted and received optical power, laser bias current, temperature, and supply voltage. This feature helps network administrators monitor link health and diagnose faults promptly.
Each transceiver undergoes rigorous optical and thermal testing to ensure consistent line-rate performance under real-world conditions.
CWDM-SFP-1490 Quality Certifications
This optical transceiver strictly complies with rigorous international quality management standards to ensure superior manufacturing excellence and long-term operational reliability.
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-1490 Certified for Reliable Host-Device Compatibility
The module is verified for seamless interoperability with a wide range of standard network switches and routing equipment.
Rigorous Testing Ensures Reliable SFP Performance
Every CWDM-SFP-1490 1G CWDM SFP optical module undergoes thorough evaluation to guarantee stable operation. Discover more at the LINK-PP Test Support Center.
Optical Spectrum Test
Measures central wavelength and spectral width to verify optical signal accuracy.
Eye Pattern Test
Analyzes signal integrity and jitter margins to ensure error-free data transmission.
Bit Error Rate Test
Evaluates long-term transmission stability under maximum operational loads.
Temperature Test
Checks transceiver performance reliability across extreme environmental thermal ranges.
Product Shipping for Netgear CWDM-SFP-1490 Compatible LINK-PP 1.25G SFP
Orders ship quickly with dependable global carriers. Prompt dispatch ensures modules arrive ready for deployment.
Anti-Static Protective Packaging
Shield internal circuitry from electrostatic discharge during transit.
Shock-Resistant Transport Protection
Absorb physical impact to prevent hardware damage on the road.
Fast Order Processing and Dispatch
Accelerate warehouse fulfillment to meet tight delivery schedules.
Global Logistics and International Delivery
Coordinate worldwide freight solutions for seamless cross-border transit.
Easily plug the CWDM-SFP-1490 1490nm CWDM module into standard switch slots to instantly enable 1G optical links. It deploys smoothly across enterprise campus networks, telecom carrier systems, and metropolitan fiber backbones for reliable long-distance gigabit data transmission.
CWDM-SFP-1490 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-1490 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 LS-CW491G-80C 1G CWDM SFP is designed for single-mode fiber (SMF) and uses duplex LC connectors. It can be connected to standard single-mode fiber infrastructure, provided the fiber condition, connector quality, splice loss, and total link loss are within the optical power budget. By
admin on
2026-02-04
A:
Yes. For a standard point-to-point duplex CWDM link, both ends should use the same 1490nm CWDM wavelength and compatible 1G SFP modules. If the link is carried through CWDM MUX/DEMUX equipment, make sure both modules are connected to the corresponding 1490nm channel ports. By
admin on
2025-11-18
A:
It can be used in both scenarios. For a direct point-to-point link, connect two compatible 1490nm modules over duplex single-mode fiber. For a CWDM multiplexed network, connect the module to the 1490nm port of a compatible CWDM MUX/DEMUX to combine multiple wavelengths onto the same fiber pair. By
admin on
2025-04-22
Please write comments with more than three
character.
492774
448227
F***z
South Africa
Verified
Purchase
5 .0
2026-06-02
We installed these CWDM modules as part of a phased data-center edge refresh. The sites do not need 10G on every route, but they do require resilient, monitored 1G connectivity across long single-mode fiber runs. The 1490nm CWDM channel allowed us to retain existing MUX/DEMUX hardware while adding capacity without trenching new fiber. From an operations standpoint, DOM is the biggest benefit. We set monitoring thresholds around receive optical power and watched the results through our normal device-management workflow. During burn-in and traffic testing, the optics remained stable and there were no link flaps. The compact SFP form factor also made replacement simple in populated switch racks. Great balance of reach, diagnostics, and cost.
Please write comments with more than three
character.
492774
448240
N***n
India
Verified
Purchase
5 .0
2026-05-11
We ordered these for a CWDM MUX/DEMUX upgrade where 1490nm was the open channel. The LS-CW491G-80C CWDM modules came online quickly and held a stable 1.25Gbps link. Nice option for enterprise fiber networks that still run 1G aggregation.
Please write comments with more than three
character.
492774
448230
W***s
Russian Federation
Verified
Purchase
5 .0
2026-04-05
We deployed LS-CW491G-80C 1G 1490nm CWDM SFP transceivers across a multi-building industrial campus. The longest installed route was just under 67km after accounting for the patch-panel path, splices, and CWDM MUX/DEMUX insertion loss. The 80km optical budget gave us the operational headroom we wanted rather than designing right at the limit.
During commissioning, we checked the DDM/DOM readings from each endpoint and compared the reported TX/RX values against our optical test results. The modules reported consistent information, and the links stayed free of packet loss and CRC alarms under production traffic. For indoor equipment rooms with 0 – 70°C conditions, this is a dependable 1490nm CWDM SFP for 1G backbone expansion.
Please write comments with more than three
character.
492774
448237
Q***s
Netherlands
Verified
Purchase
5 .0
2026-03-21
The DOM information was available in our monitoring platform, including TX/RX optical power and temperature. That is important for us because the fiber route is long and troubleshooting time is expensive. Happy with the module so far.
Please write comments with more than three
character.
492774
448232
T***l
Italy
Verified
Purchase
5 .0
2026-02-16
We tested the module with multiple switch platforms in our lab before rolling it out. It was detected correctly, the link remained stable, and diagnostics were readable through the host interface. Good 1490nm CWDM optical module for the price.
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character.
492774
448235
V***t
Singapore
Verified
Purchase
5 .0
2025-12-18
Good alternative when you need a long-distance 1G CWDM SFP transceiver but do not want to redesign the entire optical network. We used it with Duplex LC single-mode fiber and a CWDM passive system. Traffic has been clean since installation.
Please write comments with more than three
character.
492774
448226
I***e
New Zealand
Verified
Purchase
4 .0
2025-11-02
The LS-CW491G-80C SFP modules worked perfectly on our 1490nm CWDM 1G links, and DOM readings were available as expected. One outer shipping carton arrived slightly compressed, although every SFP was individually protected and passed our incoming test. Product performance is five-star; shipping presentation could be a bit better.
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492774
448243
Z***n
Thailand
Verified
Purchase
5 .0
2025-10-23
Our application was a 1GbE backhaul link between a central server room and several remote telecom cabinets connected through a CWDM transport layer. The LS-CW491G-80C was selected because we specifically needed a commercial-grade 1490nm CWDM SFP with an 80km reach, Duplex LC connector, and DOM support — not a generic 1310nm optic.
The installation team used standard LC single-mode jumpers and kept end-face cleaning procedures in place. The links came up immediately after wavelength verification. Over several weeks, receive levels remained comfortably above the -26dBm receiver sensitivity threshold, and the reported optical readings did not drift. This is a strong choice for enterprise CWDM fiber infrastructure where 1.25Gbps capacity is still appropriate.
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492774
448239
P***r
Republic of Korea
Verified
Purchase
5 .0
2025-10-08
We needed a 1G 1490nm CWDM 80km SFP optical transceiver for an indoor data-room-to-cabinet link. It worked over existing single-mode fiber with LC patch cords and showed usable receive margin. Good procurement experience overall.
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character.
492774
448231
S***t
Spain
Verified
Purchase
5 .0
2025-09-02
This is a practical commercial-temperature 1G CWDM SFP for indoor telecom rooms. Optical levels stayed stable during normal load, and the PIN receiver sensitivity was sufficient for our long single-mode span. Would order again.
Please write comments with more than three
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492774
448234
G***s
Malaysia
Verified
Purchase
5 .0
2025-08-31
We bought this 1G 1490nm CWDM 80km SFP optical transceiver for a distributed video-surveillance and building-management network. Several remote locations share the same CWDM fiber infrastructure, so the exact wavelength and optical reach were non-negotiable. The LS-CW491G-80C matched the required 1490nm channel and provided enough transmitter power for our engineered path. Our field engineers verified the LC duplex polarity, cleaned every connector, and recorded baseline DOM data at turn-up. The RX levels were within the expected design range, and the modules maintained stable connectivity through regular traffic peaks. It is a commercial-temperature module, so we used it in conditioned indoor cabinets rather than exposed roadside enclosures. For that deployment profile, it has been reliable and easy to manage.
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492774
448228
H***n
Indonesia
Verified
Purchase
5 .0
2025-06-12
We evaluated this module for a mixed-vendor enterprise network where interoperability, documentation, and repeatability were more important than simply finding the lowest-cost optic. The LS-CW491G-80C CWDM SFP passed our lab checks for 1.25Gbps Ethernet transport, module recognition, and SFF-8472 digital diagnostics. We then rolled out a controlled batch to production locations. The 80km specification is valuable for long campus, metro-edge, and remote-site fiber routes, especially when CWDM channels are already allocated. The reported TX power range of -1 to +4dBm and receiver sensitivity down to -26dBm were aligned with our loss-budget calculations. After deployment, the modules have provided clean links and predictable DOM telemetry. That is exactly what we need for repeatable network maintenance.
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492774
448242
R***l
Sweden
Verified
Purchase
5 .0
2025-05-19
Our network team used these for a campus CWDM backbone migration instead of pulling additional fiber. The 1490nm channel fit our wavelength plan, and the 1.25G SFP interface kept the project compatible with existing aggregation hardware. Easy win.
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character.
492774
448233
J***n
Belgium
Verified
Purchase
4 .0
2025-04-07
Technically, these 80km CWDM SFP modules are solid — stable link, correct wavelength, and no errors during our acceptance test. Delivery took a little longer than expected because our project schedule changed close to dispatch, but the packing and labeling were good. We would still purchase again for the next CWDM expansion.
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character.
492774
448244
X***y
Philippines
Verified
Purchase
5 .0
2025-02-28
This 1490nm 80km CWDM SFP was purchased for a regional access network where spare fiber was limited. We used a CWDM wavelength plan to carry several 1G services over one single-mode fiber pair, and this module occupied the 1490nm channel without interfering with the adjacent channels. The DFB transmitter and PIN receiver combination performed as expected over the measured loss budget.
We also ran compatibility and monitoring checks before field deployment. The host recognized the module properly, and the SFF-8472 diagnostics gave the operations team useful TX power, RX power, voltage, temperature, and laser-bias visibility. For NOC teams, that visibility matters because it lets you spot degraded connectors or fiber loss before users report an outage.
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