CWDM-SFP-1490 operates as a 1490nm CWDM single-mode SFP module with a DFB laser source, a PIN receiver, and a maximum data rate of 1.25Gbps. It delivers 40km reach over single-mode fiber and includes built-in real-time DOM (digital optical monitoring) functionality. Its specified operating temperature spans from 0°C to +70°C.
Extreme Part Number
CWDM-SFP-1490
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1490nm
Max Cable Distance
40km
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
DOM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Extreme CWDM-SFP-1490 Compatible LINK-PP 1.25G SFP
Extreme CWDM-SFP-1490 Compatible LINK-PP module is a commercial-grade 1G SFP transceiver that combines CWDM operation at 1490nm, 40km SMF reach, real-time DOM, and a duplex LC interface in a single hot-pluggable package. It meets SFP MSA standards and is built for reliable point-to-point links in metro or access networks.
CWDM-SFP-1490 module features a hot-pluggable SFP footprint and fully complies with the SFP MSA specification. It enables quick installation and field replacement without powering down the host equipment, simplifying maintenance and upgrades.
CWDM-SFP-1490: 1 Gbps Connectivity for Metro Edge Links
This CWDM module delivers a stable 1Gbps data rate over single-mode fiber, making it a reliable choice for metro edge aggregation points. Its 1Gbps line rate efficiently carries typical Ethernet traffic, meeting the bandwidth demands of edge network nodes.
CWDM-SFP-1490 Module with CWDM Technology for Fiber Efficiency
The transceiver employs CWDM technology to transport multiple wavelengths over a single fiber strand, greatly improving spectral efficiency. This reduces the need for additional fibers and lowers overall infrastructure expenses while maintaining clear signal separation.
CWDM-SFP-1490 Module with 1490nm Wavelength
This module uses the 1490nm CWDM wavelength, a channel that experiences minimal signal loss in standard single-mode fibers. The low-loss characteristic at this band helps maintain stable optical power levels over the full link length.
CWDM-SFP-1490 Module Supporting 40km Transmission
This single-mode transceiver supports up to 40km transmission distance without external amplification or regeneration. Its internal DFB laser and PIN photodiode are optimized to provide adequate optical budget for this reach under typical operating conditions.
CWDM-SFP-1490 Module with Duplex LC Interface
The duplex LC connector is provided as the optical interface, ensuring compatibility with most standard fiber patch cords and panels. This interface also facilitates easy polarity management and maintains a secure physical connection.
CWDM-SFP-1490 Module with DOM for Real-Time Monitoring
Real-time digital optical monitoring is integrated into this module, offering live readings of transmitted/received power, laser bias current, temperature, and supply voltage. It is fully compatible with SFF-8472, allowing host systems to retrieve diagnostic data via the I²C bus for proactive link management.
The Extreme CWDM-SFP-1490 Compatible LINK-PP 1G CWDM SFP transceiver complies with rigorous global standards for quality and safety. It is officially certified under ISO 9001, CE, RoHS, and FCC to ensure high operational performance and environmental compliance.
Each module undergoes strict performance testing before leaving the factory. These comprehensive quality checks ensure consistent network stability and long-term hardware durability.
CWDM-SFP-1490 Quality Certifications
These official credentials prove that every optical module meets stringent international manufacturing criteria. They demonstrate our commitment to delivering safe, high-grade, and trustworthy networking hardware.
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
This 1G SFP transceiver is thoroughly validated for seamless plug-and-play integration with major switch and router brands. It helps prevent link errors and ensures stable data transmission across diverse network environments.
Rigorous Testing Ensures Reliable SFP Performance
Our optical transceivers pass rigorous quality control checks to ensure low latency and consistent network connectivity. Explore our complete verification standards at the LINK-PP Test Support Center.
Optical Spectrum Test
Verify peak emission wavelengths to prevent channel crosstalk during optical transmission.
Eye Pattern Test
Analyze output power symmetry to prevent data distortion across optical links.
Bit Error Rate Test
Check signal integrity to prevent packet loss during high-speed data transfer.
Temperature Test
Test thermal tolerance to ensure stable operation under extreme temperature conditions.
Product Shipping for Extreme CWDM-SFP-1490 Compatible LINK-PP 1.25G SFP
We use durable packaging and reliable shipping partners to protect every optical transceiver during transit. Our efficient logistics network ensures secure handling and prompt delivery to international destinations.
Anti-Static Protective Packaging
Prevent electrostatic damage to protect sensitive internal components during shipping.
Shock-Resistant Transport Protection
Shield sensitive hardware against physical impacts and vibration throughout transit.
Fast Order Processing and Dispatch
Prepare and ship orders quickly to ensure rapid network deployment timelines.
Global Logistics and International Delivery
Partner with reliable express carriers to deliver products safely to global destinations.
Insert the CWDM-SFP-1490 1490nm CWDM 1G SFP module into the target switch port until it clicks securely into place, then attach the single-mode fiber patch cord. This optical module enables reliable, cost-effective gigabit data transmission across metropolitan edge link architectures and aggregation networks.
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:
The LS-CW491G-40C CWDM 1G SFP module requires standard single-mode fiber terminated with standard duplex LC connectors to ensure stable transmission up to 40km. By
admin on
2026-02-09
A:
Yes, the built-in 1490nm CWDM DFB laser operates within the standard ITU-T CWDM grid window, ensuring high channel isolation and minimal adjacent-channel crosstalk when used with standard passive multiplexers. By
admin on
2025-06-16
A:
Yes, the transceiver fully supports both 1.063Gbps Fibre Channel and 1.25Gbps Gigabit Ethernet protocols across point-to-point single-mode fiber links. By
admin on
2025-01-05
The bail latch mechanism feels sturdy and locks securely into high-density line cards without jamming or loose play. Dust caps fit tightly, keeping optical interfaces pristine during installation.
Please write comments with more than three
character.
497618
456329
G***n
Russian Federation
Verified
Purchase
5 .0
2026-01-04
We expanded our metropolitan CWDM ring architecture by dropping this 1490nm CWDM module into an ITU-T G.694.2 standard multiplexer grid. With adjacent 1470nm and 1510nm channels running active carrier traffic, this module showed exceptional channel isolation with zero optical bleed or cross-talk degradation. Temperature drift inside our aggregation chassis remained well controlled, and center wavelength stability stayed locked on 1490nm through thermal cycling. It delivers the exact physical layer reliability and optical headroom required for carrier-grade distribution networks.
Please write comments with more than three
character.
497618
456340
D***y
South Africa
Verified
Purchase
4 .0
2026-01-02
The module itself is great — clean 38km link, accurate DOM, works in all my switches. Knocking one star only because the box arrived with a slightly dented corner. Nothing damaged, but I'd like to see better packaging for a batch order.
Please write comments with more than three
character.
497618
456342
R***e
Australia
Verified
Purchase
5 .0
2025-11-19
We multiplexed this 1490nm CWDM SFP transceiver into our campus passive MUX filter to connect two administrative buildings 28km apart. The link budget has plenty of margin, and the DOM monitoring gives our NOC complete visibility. Seamless setup!
Please write comments with more than three
character.
497618
456332
C***m
Malaysia
Verified
Purchase
4 .0
2025-11-11
Performance is exactly as advertised and I'd buy again. The only gripe is logistics — tracking went quiet for a few days and it took longer than expected to reach us. Product quality is top- notch. I just wish the shipping was a little more predictable.
Please write comments with more than three
character.
497618
456343
J***n
Italy
Verified
Purchase
5 .0
2025-10-29
Using these 1G SFP CWDM modules for a campus fiber build between two buildings about 30km apart. The 1490nm wavelength pairs perfectly with our CWDM Mux, and the duplex LC single-mode link has been rock-stable all month. DOM shows healthy TX/RX power every time I check.
Please write comments with more than three
character.
497618
456338
N***y
Republic of Korea
Verified
Purchase
5 .0
2025-09-09
Ordered a batch of 24 units for a regional fiber modernization project. Every unit had anti-static packaging and tested clean on our optical power meters upon delivery. Highly consistent manufacturing.
Please write comments with more than three
character.
497618
456328
E***l
Thailand
Verified
Purchase
5 .0
2025-08-04
Connecting multiple municipal branch offices over leased dark fiber used to require expensive proprietary optics, but these MSA-compliant 1G CWDM modules solved that completely. They were recognized on the fly by different switch and router models across our sites without throwing unsupported transceiver warnings or requiring forced port configurations. The build quality of the metal casing and bail latch feels rugged, making field insertion and removal smooth and secure.
Please write comments with more than three
character.
497618
456341
Q***s
Brazil
Verified
Purchase
5 .0
2025-07-28
Deployed over a 30km dark fiber ring connecting two branch offices. Transmitter output and receiver sensitivity are strictly within spec, delivering a stable -14 dBm Rx reading across our patch panels.
Please write comments with more than three
character.
497618
456333
H***e
Singapore
Verified
Purchase
5 .0
2025-06-18
These CWDM SFP transceivers let us push multiple wavelengths over one fiber pair. The 1490nm unit locks in nicely with our Mux/Demux and the 40km reach covers our whole metro footprint. Solid engineering for the price.
Please write comments with more than three
character.
497618
456330
K***n
Spain
Verified
Purchase
5 .0
2025-04-01
Replaced our aging long-reach optics with these 1490nm 1G SFP transceivers to reclaim wavelength capacity across our metropolitan ring. Outstanding transmission quality at a fraction of standard OEM prices.
Singapore · English · SGD
