All Products
Services
Support
About Us
Resources
Mind your business with a variety of trusted payment options.
Use order number or tracking number to check shipping status.
Get your quote fast and offer you more professional service.
Help manage your budget & expenditure better.
Free samples support, achieve your test results efficiently.
Professional team support and service, to solve your problems in time.
Ask us whatever you care, we will help you 24/7.
Get your quote fast and offer you more professional service.
Meet us and know our mission, belief, service and more.
Find our locations and get connected with us closely.
Quality management, testing, compatibility and global compliance.
Download ISO, CE, FCC, UL, RoHS and REACH certificates by product line.
Lab tour, optical test bed, compatibility tool and test requests.
Find out the latest news and events around l-p.com
Deep dive into technical guides, industry standards, and SFP compatibility insights.
Detailed product benchmarks and side-by-side comparisons to help you choose the right module.
Explore real-world connectivity solutions for data centers, enterprises, and telecom networks.
Essential tips on choosing data rates, transmission distances, and connector types.
New Customer? Create an account
The LINK-PP LS-BL31551G-02C is a high-performance 1.25G BiDi SFP optical transceiver specifically designed for robust Gigabit Ethernet connections. Operating over single-mode fiber, this 1.25Gbps bidirectional module utilizes advanced wavelength-division multiplexing technology to transmit and receive data simultaneously. It delivers cost-effective network upgrades while ensuring excellent signal integrity across demanding data center environments.
| LINK-PP Part Number | LS-BL31551G-02C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1310nm-TX/1550nm-RX | Max Cable Distance | 2km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type | FP | Receiver Type |
PIN |
| TX Power | -15 to -8dBm | RX Power | -23 to -1dBm |
| Receiver Sensitivity | <-23dBm | DOM Support | Yes |
| Operating Temperature Range | 0 to 70°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
This single-mode fiber optic transceiver offers exceptional networking efficiency through its compact hot-pluggable SFP form factor. Engineered for low power consumption and high reliability, the 1G fiber module seamlessly integrates into enterprise networks, optimizing fiber optic cabling resources while reducing overall infrastructure costs and maintenance complexities.
As a premium networking component, this 1.25G BiDi optical module utilizes a high-quality FP laser and PIN photodetector. The hot-swappable optical transceiver ensures stable data transmission, making it an essential asset for modern telecommunications and high-speed enterprise routing setups.
Delivering seamless 1G connectivity, this optical transceiver module perfectly supports leaf-to-spine network architectures. The gigabit ethernet pluggable interface guarantees low-latency switching between network tiers, ensuring scalable data center topologies and optimized bandwidth allocation for intensive enterprise workloads.
Featuring advanced WDM technology, the device operates seamlessly with a 1310nm-TX and 1550nm-RX wavelength configuration. This single-fiber bidirectional transmission capability effectively doubles your existing cabling capacity, providing an efficient fiber optic connectivity solution for expanding telecommunication infrastructures.
Engineered for short to medium-range communications, this gigabit SFP module supports a reliable 2km transmission distance over standard single-mode fiber. It provides an ideal long-reach networking solution for campus interconnects, edge computing facilities, and building-to-building fiber links.
Designed with a standard simplex LC interface, this gigabit optical transceiver ensures secure and precise physical fiber connections. The single LC connector simplifies patch cord management within high-density server racks, significantly reducing installation time and cabling clutter.
Integrated with Digital Optical Monitoring capabilities, this intelligent 1.25G transceiver allows administrators to track critical operational parameters. The real-time DOM diagnostics provide instant feedback on optical power, temperature, and voltage, enabling proactive network maintenance and preventing unexpected downtime.
Ensuring global compliance, this 1G SFP module meets strict industry standards. The telecommunication-grade transceiver passes comprehensive regulatory requirements to guarantee safe, environmentally friendly, and interference-free networking operations.
Every gigabit fiber optic module undergoes a rigorous quality testing program. Our comprehensive factory inspections ensure maximum durability, consistent signal integrity, and exceptional electrical performance across diverse networking environments.
This commercial-grade optical transceiver proudly holds extensive global quality certifications, including CE, FCC, UKCA, UL, and REACH. These approvals validate its robust electromagnetic compatibility and outstanding environmental safety.
Thoroughly certified for reliable host-device compatibility, this interoperable gigabit module works flawlessly with major switch brands. It ensures plug-and-play network integration without triggering vendor lock-in warnings or communication errors.
Our advanced laboratory evaluations guarantee superior SFP performance. Each fiber optic transceiver is meticulously tested to ensure flawless continuous gigabit network transmission.
Precise optical spectrum tests verify exact center wavelengths for optimal single-mode transmission stability.
Advanced eye pattern testing confirms excellent signal clarity and minimizes optical jitter during operation.
Comprehensive bit error rate tests guarantee zero packet loss and absolute data transmission accuracy.
Extreme thermal testing ensures reliable operation across the entire commercial environmental temperature range.
We utilize secure packaging and efficient supply chain solutions to deliver your networking equipment safely, ensuring your optical components arrive completely intact.
Specialized anti-static shielding bags prevent electrostatic discharge damage during transit.
Customized shock-absorbing foam inserts completely protect the delicate optical interfaces.
Streamlined warehouse operations guarantee immediate order fulfillment and rapid dispatching.
Premium courier partnerships ensure swift and traceable worldwide international delivery.
Installing this hot-pluggable gigabit transceiver is remarkably straightforward. Simply align the SFP module with your networking switch port, insert it until the latch clicks securely, and connect your single-mode patch cable for instant high-speed network activation.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LS-BL31551G-02C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps |
Wavelength | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 2km | 3km | 10km | 15km | 40km | 20km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -15 to -8dBm | -15 to -8dBm | -9 to 0dBm | -5 to 0dBm | -5 to 0dBm | -9 to 0dBm |
Receiver Sensitivity | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm |
Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | FP | FP | FP | FP | DFB | FP |
Receiver Type | PIN | PIN | PIN | PIN | PIN | PIN |
DOM Support | Yes | Yes | Yes | Yes | Yes | Yes |
Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Will this 1.25G BiDi module work seamlessly with my mix of Juniper and Ubiquiti switches without triggering any vendor-lock errors? By J***n on 2026-06-06
A: Absolutely! This LS-BL31551G-02C module is strictly MSA compliant. We’ve extensively verified its interoperability across major brands, including Cisco, Juniper, and Ubiquiti, ensuring plug-and-play integration with zero vendor-lock issues on your end. By admin on 2026-06-06
Q: This standard module is rated for 0-70°C. Do you have an industrial-grade version for outdoor cabinets that endure freezing temperatures? By M***l on 2026-04-21
A: Yes! While this commercial unit supports 0 to 70°C, we also offer an industrial-grade counterpart (ending with "-I") that guarantees stable performance in harsh environments ranging from -40°C to +85°C. You can easily find the industrial version in our store. By admin on 2026-04-21
Q: We're planning a mass deployment for a new data center. Do you offer tier-pricing or bulk discounts if I order over 500 units? By A***r on 2026-01-27
A: Yes, we do! For large-scale data center rollouts, we provide highly competitive volume pricing. If you need 500+ units for bulk procurement, please reach out to our sales team directly to unlock exclusive B2B wholesale rates. By admin on 2026-01-27
Q: Can you confirm if this optical module meets all global regulatory standards like CE, FCC, and RoHS for our corporate compliance checks? By S***z on 2025-11-03
A: Definitely. All our Link-PP optical transceivers strictly adhere to CE, FCC, and RoHS certifications. We also ensure full compliance with IEEE 802.3z and Fast Ethernet standards, fully backing your enterprise compliance requirements. By admin on 2025-11-03
{{reply_items.topic || reply_items.text}}By {{reply_items.author}}
{{ lpMoneyText(detail_data.displayed_price.unit_prefix, item.displayed_price.value || item.displayed_price.min, detail_data.displayed_price.unit_suffix) }}
Germany
Carrier
CostDelivery TimeTracking
Company
CostTime
{{ shipitem.name }}
{{ isFreeShipping(shipitem)? 'Free Shipping' : lpMoneyText(detail_data.displayed_price.unit_prefix, shipitem.price, detail_data.displayed_price.unit_suffix) }} To Be Negotiated {{shipitem.datemin}}-{{shipitem.datemax}} days Available
{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}}