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The high-capability LINK-PP LS-BL49551G-A2I 1G BiDi transceiver supports stable 1.25 Gbps data transmission over single-mode fiber up to 120 km, using a transmit wavelength of 1490nm and a receive wavelength of 1550nm for dependable long-distance connectivity.
| LINK-PP Part Number | LS-BL49551G-A2I | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1490nm-TX/1550nm-RX | Max Cable Distance | 120km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type | DFB BiDi | Receiver Type |
APD |
| TX Power | 0 to +5dBm | RX Power | -28 to -1dBm |
| Receiver Sensitivity | <-32dBm | Receiver Overload | -6dBm |
| Operating Temperature Range | -40 to 85°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
The LINK-PP LS-BL49551G-A2I 1G BiDi SFP module provides reliable Gigabit throughput and easy plug-and-play deployment. It features a high-quality DFB laser, a high-sensitivity APD/TIA receiver, a simplex LC interface, and integrated Digital Optical Monitoring (DOM). With BiDi technology, it enables full-duplex communication over a single fiber strand, improving fiber utilization while reducing cabling costs.
Thanks to its precisely paired transmit and receive wavelengths, this LINK-PP LS-BL49551G-A2I 1G BiDi module supports simultaneous bidirectional communication over one fiber. Its compact, efficient design maximizes fiber resources and offers a cost-effective solution for increasing network capacity without deploying extra fiber.
With consistent performance of 1.25 Gbps, this LINK-PP LS-BL49551G-A2I BiDi SFP module is ideal for use in remote monitoring systems, industrial automation, metro access networks, enterprise WAN extensions, and ISP backbone infrastructure.
The refined wavelength pairing of 1490nm (TX) and 1550nm (RX) ensures stable, bidirectional communication via a single fiber, decreasing interference and enhancing optical signal integrity.
This LINK-PP LS-BL49551G-A2I BiDi module is designed for ultra-long-distance applications and supports transmission distances of up to 120 km over standard single-mode fiber. It maintains signal integrity and low error rates across extended links.
Featuring a simplex LC connector, the LINK-PP LS-BL49551G-A2I BiDi SFP module supports dual-direction transmission on a single fiber, optimizing infrastructure efficiency and reducing deployment overhead.
With built-in DOM support, the LINK-PP LS-BL49551G-A2I BiDi module delivers instant insight into critical parameters, allowing for preventative maintenance and reducing downtime.
With ISO 9001 quality assurance and global certifications including CE, RoHS, and FCC, every LINK-PP module ensures consistent, reliable operation across networks.
Thorough validation of key parameters ensures flawless signal quality and thermal resilience.
LINK-PP maintains strict adherence to ISO 9001 standards, along with CE, RoHS, and FCC compliance, ensuring excellent performance.
Precision-tested with LINK-PP platforms to guarantee flawless operation from deployment through the entire service period.
LINK-PP applies a comprehensive validation process to ensure optimal performance. Visit the LINK-PP Test Support Center for more information.
Confirms exact wavelength alignment for superior optical performance.
Ensures flawless waveform quality and transmission consistency.
Safeguards data integrity with minimal transmission errors.
Validates consistent performance across extreme temperature ranges.
LINK-PP safeguards every module with secure packaging and trusted worldwide delivery solutions.
ESD-safe packaging preserves electronic integrity during handling and transport.
Durable, shock-absorbing packaging reduces the risk of impact-related damage.
Optimized processing systems accelerate order handling and dispatch.
Reliable global shipping networks support efficient international delivery.
The LINK-PP LS-BL49551G-A2I 1G BiDi SFP module is typically deployed in complementary pairs on a single fiber link, connecting switches, routers, or media converters to enable long-distance, high-speed communication while conserving fiber resources. It is ideal for telecom backbones, industrial networks, long-distance surveillance, metro access networks, and enterprise WAN extensions.
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-BL49551G-A2I 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 | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 120km | 150km | 160km | 100km | 80km | 10km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | -9 to 0dBm |
Receiver Sensitivity | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -26 to -1dBm | -23 to -1dBm |
Operating Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | DFB BiDi | DFB | DFB | DFB BiDi | DFB BiDi | DFB BiDi |
Receiver Type | APD | APD | APD | PIN | PIN | PIN |
Receiver Overload | -6dBm | -1dBm | -1dBm | -1dBm | ||
Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | SFP MSA、SFF-8472 | 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 1G industrial optic work in standard Cisco switches for an outdoor cabinet? By B***r on 2026-05-26
A: Absolutely. It is fully MSA compliant and codes perfectly with mainstream gear. The industrial temperature range handles extreme outdoor environments without issues. By admin on 2026-05-27
Q: Can I check the optical RX levels on this 120km module via CLI? By N***s on 2026-01-07
A: Yes, it features full DDM/DOM support. You can easily monitor real-time RX and TX power, temperature, and voltage directly through your switch interface. By admin on 2026-01-07
Q: Do I need a specific SFP for the other end of a 120km fiber run? By P***n on 2025-10-24
A: Yes, since this is a 1490nm-TX/1550nm-RX BiDi module, you need the matching 1550nm-TX/1490nm-RX counterpart to establish the 1G link over your simplex SMF. By admin on 2025-10-24
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