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LS-CW451G-20C 1g sfp cwdm 1450nm 20km duplex lc dom smf optical transceiver module
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LINK-PP LS-CW451G-20C 1G SFP CWDM 1450nm 20km Duplex LC DOM SMF Optical Transceiver Module

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Product summary

Product
LINK-PP LS-CW451G-20C 1G SFP CWDM 1450nm 20km Duplex LC DOM SMF Optical Transceiver Module
SKU
202307
P/N
LS-CW451G-20C
Price
A$ 69.5
Stock
70 in Stock
Sold
1.2K
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28 Reviews
3 Questions
1.2K Sold
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A$ 59.77
Manufacture: LINK-PP P/N: LS-CW451G-20C SKU: 202307
Shipping:
A$ 73.351
to Australia via DHL
Estimated delivery time : 0 - 27 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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LINK-PP LS-CW451G-20C 1G SFP Specifications

LS-CW451G-20C SFP module combines a 1450nm CWDM DFB laser with a sensitive PIN photo detector to support transmission rates up to 1.25Gbps. Capable of spanning up to 20km on single-mode fiber, it allows network administrators to execute real-time digital optical monitoring for proactive system health checks. The module guarantees steady operation across thermal conditions spanning 0°C to +70°C.

LINK-PP Part Number LS-CW451G-20C Vendor Name LINK-PP
Form Factor SFP Max Data Rate 1.25Gbps
Wavelength 1450nm Max Cable Distance 20km
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 LINK-PP LS-CW451G-20C 1G SFP

Designed to maximize existing fiber capacity, the LINK-PP LS-CW451G-20C leverages 1450nm CWDM technology to deliver reliable 1G data transmission over single-mode fiber. Supporting distances up to 20km via duplex LC connectors, it integrates digital optical monitoring (DOM) to provide efficient, cost-effective bandwidth expansion for enterprise and carrier access networks.

LINK-PP LS-CW451G-20C 1G SFP Optical Module

The transceiver features a hot-pluggable SFP footprint that allows seamless installation without shutting down active network devices. Its strict compliance with SFP MSA standards guarantees universal interoperability with a wide range of industry-standard networking hardware.

LS-CW451G-20C: 1 Gbps Connectivity for Edge Optical Access

Delivering a dedicated 1 Gbps data rate, this module provides reliable gigabit throughput for bandwidth-intensive edge routing. It enables operators to maintain stable, low-latency communication across enterprise campus backbones and local service access networks.

LS-CW451G-20C Module with CWDM Technology for Fiber Efficiency

Coarse Wavelength Division Multiplexing (CWDM) allows multiple distinct optical signals to share a single fiber pair without mutual interference. This technology drastically reduces dark fiber leasing costs by maximizing existing cable capacity.

LS-CW451G-20C Module with 1450nm Wavelength

The standardized 1450nm center wavelength enables precise channel routing within ITU-T G.694.2 CWDM grid topologies. Operating on this specific band prevents signal crosstalk when multiplexing several data channels onto one physical strand.

LS-CW451G-20C Module Supporting 20km Transmission

Integrated DFB and PIN components drive reliable long-reach optical signals up to 20km over single-mode fiber. Such extended reach easily bridges regional aggregation switches and physically distant central offices.

LS-CW451G-20C Module with Duplex LC Interface

An industry-standard duplex LC optical connector ensures precise mechanical locking and low insertion loss during cable insertion. This compact interface format enables high port density on switches and patch panels.

LS-CW451G-20C Module with DOM for Real-Time Monitoring

Real-time digital optical monitoring (DOM) tracks critical operating parameters including Rx/Tx optical power, transceiver temperature, laser bias current, and supply voltage. Fully compatible with SFF-8472 digital diagnostics specifications, it gives system administrators early visibility into potential link failures.


LINK-PP LS-CW451G-20C 1G SFP Certification

The LINK-PP LS-CW451G-20C CWDM SFP module meets rigorous ISO 9001, CE, RoHS, and FCC certifications, ensuring excellent build quality, reliable electromagnetic compatibility, and full adherence to global environmental standards.

Optical Transceivers Testing

Every CWDM module undergoes strict optical, electrical, and thermal inspection before leaving the factory floor. This comprehensive screening process filters out defects to maintain stable operation in real-world network deployments.

LS-CW451G-20C Quality Certifications

Holding these recognized industry approvals confirms that the transceiver satisfies strict safety and performance benchmarks. Network engineers can deploy this optical module with total confidence in its long-term operational stability.

LS-CW451G-20C Certified for Reliable Host-Device Compatibility

Extensive switch and router testing validates that the module connects seamlessly across diverse vendor hardware. This proven hardware interoperability eliminates link errors and prevents unexpected downtime during switch integration.


Rigorous Testing Ensures Reliable SFP Performance

LINK-PP LS-CW451G-20C 1G CWDM SFP undergoes multi-stage quality validation to guarantee flawless optical link stability and network uptime. To see how each module meets industry standards, visit the LINK-PP Test Support Center.

Optical

Optical Spectrum Test

Verify central wavelength alignment to prevent channel optical interference.

Optical

Eye Pattern Test

Measure transmitter signal clarity to ensure low pulse distortion.

Optical

Bit Error Rate Test

Evaluate packet transmission accuracy over long single-mode fiber links.

Optical

Temperature Test

Validate thermal stability across full commercial operating temperature ranges.


Product Shipping for LINK-PP LS-CW451G-20C 1G SFP

LINK-PP ensures that every LS-CW451G-20C CWDM SFP module is securely packed and handled to prevent damage during transit. Our streamlined fulfillment system guarantees safe and timely delivery to customers worldwide.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Shield sensitive optical components from harmful electrostatic discharge damage.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Cushion inner optical assemblies against severe vibrations and drops.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Expedite warehouse fulfillment to ensure rapid dispatch for orders.

Global Logistics and International Delivery

Global Logistics and International Delivery

Partner with reliable international carriers for safe global shipments.

LINK-PP LS-CW451G-20C 1G SFP Usage Demonstration

Deploying the LS-CW451G-20C involves hot-swapping the module into an active switch and connecting single-mode fiber via duplex LC connector. Tailored for edge optical access, it multiplexes 1450nm signals into existing CWDM infrastructure while real-time DOM monitoring ensures reliable link operation.

LS-CW451G-20C 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

Pre-Sales Technical Consultation

Professional guidance to help you select the optimal LS-CW451G-20C module for your network design and application needs.

Compatibility Verification Support

Compatibility Verification Support

Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.

Deployment & Installation Assistance

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

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.

LINK-PP LS-CW451G-20C 1G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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Questions & Answers

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  • Q: If my CWDM Mux/Demux filter introduces 2 to 3 dB of insertion loss, will this module still cover a 15km to 18km span? By P***n on 2026-03-25

    A: Yes, in most cases it handles that comfortably. This module provides an optical power budget of roughly 19 dB (launching between -5 and 0 dBm, with a -24 dBm receiver sensitivity). Typical single-mode fiber loses about 0.35 to 0.4 dB per kilometer around 1450nm, so an 18km fiber run consumes around 7 dB. Adding 3 to 6 dB of total multiplexer and patch loss still leaves you with around 6 dB of healthy operating margin. By admin on 2026-03-26

  • Q: Is the 1450nm channel affected by fiber attenuation, and can I use it with any standard single-mode patch cord? By P***r on 2025-12-05

    A: You can use any standard duplex LC single-mode fiber (OS2). However, 1450nm sits near the "water peak" region of optical glass. If your network runs on modern low-water-peak single-mode fiber (ITU-T G.652.D), attenuation is low and 20km is easily reachable. If you are patching into a very old legacy fiber plant, attenuation at 1450nm can be slightly higher than at 1550nm, so it is always smart to check your total link loss with the built-in DOM before commissioning. By admin on 2025-12-06

  • Q: Why does this module use a DFB laser instead of a FP laser, and how does that help with my 20km CWDM link? By J***r on 2025-04-03

    A: The DFB laser produces a much narrower, single-frequency light beam compared to a standard FP laser. In a CWDM network where multiple channels are packed closely together, the narrow spectral width of a DFB laser prevents the 1450nm light from drifting or bleeding into adjacent channels. It also reduces chromatic dispersion over the 20km single-mode run, ensuring your 1.25Gbps signal stays crisp and error-free over long distances. By admin on 2025-04-04

Customer Reviews

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E***n
Bulgaria
Verified Purchase
5 .0
2026-06-29
Awesome 1450nm CWDM SFP optical module, linked up instantly.
C***t
Philippines
Verified Purchase
5 .0
2026-06-15
Upgraded our enterprise campus distribution layer. The latch mechanism on the duplex LC connector feels durable, fits cleanly into tight patch panels, and the optical budget headroom at 15km distance is more than generous. Great cost-effective 1G CWDM option.
E***z
France
Verified Purchase
5 .0
2026-05-22
Deployed this 1450nm SFP module across a 14km single-mode link between our central data closet and warehouse. DOM readings show -2.4 dBm TX power and -16 dBm RX power, perfectly within the spec range. Links stayed rock solid for weeks. :)
A***l
Argentina
Verified Purchase
5 .0
2026-05-05
Put this unit to work inside an outdoor roadside cabinet for a remote camera feed. Even when the enclosure warmed up during hot sunny afternoons between 15°C and 42°C, the optic stayed around 53°C, which is well inside the safe 0 to 70°C rating. The metal casing keeps out electrical noise from nearby power units, keeping our 1.25G link completely clean and running smoothly across 14km of fiber. ;)
E***e
Turkey
Verified Purchase
5 .0
2026-04-16
Nice option for refreshing 1G links without rebuilding the whole CWDM plan. DFB output and PIN receive performance were stable on our existing SMF route. It is especially useful where a short-reach optic does not leave enough margin.
E***h
Hungary
Verified Purchase
5 .0
2026-04-07
Plugged in, matched wavelength plan, no drama.
E***z
Morocco
Verified Purchase
5 .0
2026-03-31
Set up these transceivers to bridge two municipal offices separated by roughly 13km of outdoor single-mode fiber. We needed a clean separate wavelength so we could split emergency lines from routine office traffic over the same glass pair. This 1450nm CWDM 1G SFP module cleared up our crosstalk concerns entirely and carried continuous line-rate data without a single transmission glitch. An easy and practical way to get more out of existing fiber lines.
J***z
New Zealand
Verified Purchase
5 .0
2026-02-21
Great budget 1G CWDM 20km SFP transceiver module.
G***g
Singapore
Verified Purchase
5 .0
2026-02-07
As a field network technician, finding standard-compliant optics with accurate channel wavelengths without paying huge brand premiums is a huge win. This module sits right on the 1450nm wavelength grid and pairs up nicely with our older multiplexer gear across an 11km span. Standard MSA compliance makes it easy to interchange between different aggregation setups without headaches. Will definitely pick up another batch for future node expansions. =)
R***s
Iran, Islamic Republic of
Verified Purchase
5 .0
2026-01-26
Perfect solution for our remote backup site. The 20km link budget easily handles our 12km run through multiple patch panels and a passive mux. DDM reporting through our monitoring stack confirmed rock-solid stability from day one.
A***e
United Arab Emirates
Verified Purchase
4 .0
2026-01-05
Replaced an aging OEM optic with this LS-CW451G-20C CWDM module. Real-time temperature monitoring hovers around 38°C inside a crowded server room switch stack. Receiver sensitivity is great with a -24dBm received signal. Very impressed with the build quality. ;)
W***s
Netherlands
Verified Purchase
5 .0
2025-12-21
Our NOC requires more than just low-cost optical modules; we need a 1G CWDM SFP with practical diagnostic capabilities. This SFP module's DOM function provides stable reporting of TX/RX optical power and temperature, making it easier for us to detect fiber connector contamination before the link becomes unstable.
S***n
United Arab Emirates
Verified Purchase
4 .0
2025-11-24
Everything arrived working, and the DOM readings looked normal. I would just prefer a little more cushioning around the individual SFP boxes for long-distance delivery.
K***r
Macao
Verified Purchase
5 .0
2025-11-08
Latched firmly into our aggregation rack, no hassle. =)
C***z
Nepal
Verified Purchase
5 .0
2025-10-31
We used these 1G 1450nm CWDM SFP transceivers to light up a secondary connection through our passive CWDM multiplexer. The DFB laser output is very clean on the spectrum analyzer, sitting accurately right at 1450nm. Smooth installation overall. :D
B***l
Macao
Verified Purchase
5 .0
2025-09-29
Flawless 1.25G connection over our campus fiber. :)
M***y
Taiwan, Province of China
Verified Purchase
5 .0
2025-09-03
We used this 20km 1450nm CWDM SFP module to upgrade an uplink between two multi-tenant buildings. The run goes through several patch panels and a passive filter, but the optical power came through nicely with a clear, steady signal that stayed far away from the receiver limit. It linked up immediately on our switches without needing special command tweaks or extra setup steps. Truly dependable hardware for everyday networking. :D
N***k
Sweden
Verified Purchase
5 .0
2025-08-26
Put several of these units through our test bench across different switches before deploying them out in the field. Every single module showed very uniform transmit power around -2 dBm, sitting comfortably above the minimum baseline. The receiver also tolerated short patch tests with an attenuator without any signal overload issues. Consistent manufacturing quality from piece to piece, which makes bulk rollouts much easier. :-D
J***n
Mexico
Verified Purchase
5 .0
2025-08-07
Accurate 1450nm channel on our 8-ch CWDM mux. ;)
L***l
Australia
Verified Purchase
5 .0
2025-07-30
We used this 1450nm SFP module on an 18km single-mode fiber line connecting our main office to a remote backup site. With our CWDM multiplexers in place, the optical link loss came out right around 16 dB. The transmitter launched at -1.8 dBm, and our receiver showed -18.3 dBm, which leaves plenty of safety headroom above the receiver limit. Internal temperature stayed super steady at 41°C during our busiest work hours. It is an honest, dependable fiber optic that just works. :)
I***s
Singapore
Verified Purchase
4 .0
2025-06-25
No issue with the 1G CWDM 1450nm SFP transceivers at all. Customs processing added a couple of days to delivery, but the shipment arrived complete and properly sealed.
S***e
Thailand
Verified Purchase
5 .0
2025-06-09
Ordered a batch of these CWDM SFP modules for connecting remote surveillance NVRs across municipal fiber. Even inside ventilated outdoor street enclosures reaching 48°C ambient, the transceivers operated stably well within their 0 to 70°C rating. =)
A***z
Cambodia
Verified Purchase
5 .0
2025-05-26
Plugged right in, clean link, zero CRC drops.
C***z
South Africa
Verified Purchase
5 .0
2025-05-13
Connected this module to link our offsite backup server to the main server room over a 16km single-mode run. The duplex LC connector clicked in securely, and all the live power readings showed up on our monitoring system right away. We pushed large multi-gigabyte file backups across the link for three consecutive days at full Gigabit speed without any slowdowns or frame drops. Great everyday value and rock-solid link stability.
A***l
Austria
Verified Purchase
4 .0
2025-04-29
Added this to our core router for an offsite backup link. SFF-8472 compliance is genuine; RouterOS pulls voltage, bias current, and optical levels accurately. Handles full Gigabit throughput continuously with no dropped packets.
A***z
Romania
Verified Purchase
5 .0
2025-03-18
We run several wavelengths through one CWDM fiber pair, so channel accuracy matters more than headline speed. This 1450nm CWDM SFP performed as expected with our mux/demux equipment and did not introduce CRC errors during traffic testing.
E***t
Macao
Verified Purchase
5 .0
2025-02-01
We were running low on spare fiber across our business campus, so we set up multiple channels over one single-mode strand. This 1450nm SFP optical module slid smoothly into our distribution switch, and the built-in diagnostic monitoring worked straight out of the box. Signal readings on our network dashboard matched our handheld power meter perfectly. After a month of non-stop daily traffic, we have seen zero dropped packets, and the metal pull latch feels solid and well made.
E***g
Finland
Verified Purchase
5 .0
2025-01-22
Needed a reliable 1450nm CWDM channel to expand backhaul capacity on an existing duplex LC pair without trenching new fiber. Plugged into our switches, accepted without vendor lock warnings, and negotiated 1.25Gbps line rate immediately.
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