Will it work with OEM-compatible switches from different vendors?

Yes. The module is designed for broad OEM compatibility. It has been widely deployed on various mainstream networking platforms. If you need a specific coding option, LINK-PP can usually provide compatible programming before shipment.

Can this 1G BiDi SFP really support a full 100km optical link?

Yes. This module is designed for Gigabit Ethernet transmission over single-mode fiber up to 100km, provided the fiber quality and overall optical link budget meet the required specifications.

What module should I use on the opposite end of the fiber?

This model transmits at 1490nm and receives at 1550nm. It must be paired with the complementary BiDi transceiver that transmits at 1550nm and receives at 1490nm (such as LS-BL55491G-A0C)to establish a working fiber link.

Does this module support DOM or DDM monitoring?

Yes. It supports Digital Optical Monitoring (DOM/DDM), allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current in real time.

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LINK-PP LS-BL49551G-A0C 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module

Name: LINK-PP LS-BL49551G-A0C 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183723
Price: 24.51 USD
Availability: InStock
Rating: 4.9 (27 reviews)

# 183723

Product: LINK-PP LS-BL49551G-A0C 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module
SKU: 183723
P/N: LS-BL49551G-A0C
Price: $ 28.5
Stock: 770 in Stock
Sold: 1.3K
Product URL: https://www.l-p.com/products/478683.htm

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27 Reviews

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Manufacture: LINK-PP

P/N: LS-BL49551G-A0C

Compatible:: LINK-PP

Compatible P/N:: LS-BL31551G-02C | 2km; LS-BL55311G-02C | 2km; LS-BL31551G-03C | 3km; LS-BL31551G-03I | 3km; LS-BL55311G-03C | 3km; LS-BL55311G-03I | 3km; LS-BL31491G-10C | 10km; LS-BL31491G-10I | 10km; LS-BL31551G-10C | 10km; LS-BL31551G-10I | 10km; LS-BL31551GE-10C | 10km; LS-BL49311G-10C | 10km; LS-BL49311G-10I | 10km; LS-BL49551G-10C | 10km; LS-BL49551G-10I | 10km; LS-BL55311G-10C | 10km; LS-BL55311G-10I | 10km; LS-BL55311GE-10C | 10km; LS-BL55491G-10C | 10km; LS-BL55491G-10I | 10km; LS-BL31551G-15C | 15km; LS-BL31491G-20C | 20km; LS-BL31491G-20I | 20km; LS-BL31551G-20C | 20km; LS-BL31551G-20I | 20km; LS-BL49311G-20C | 20km; LS-BL49311G-20I | 20km; LS-BL49551G-20C | 20km; LS-BL55311G-20C | 20km; LS-BL55311G-20I | 20km; LS-BL55491G-20C | 20km; LS-BL31491G-40C | 40km; LS-BL31491G-40I | 40km; LS-BL31551G-40C | 40km; LS-BL31551G-40I | 40km; LS-BL49311G-40C | 40km; LS-BL49311G-40I | 40km; LS-BL55311G-40C | 40km; LS-BL55311G-40I | 40km; LS-BL31551G-60C | 60km; LS-BL31551G-60I | 60km; LS-BL49551G-60C | 60km; LS-BL55311G-60C | 60km; LS-BL55311G-60I | 60km; LS-BL55491G-60C | 60km; LS-BL27331G-80C | 80km; LS-BL33271G-80C | 80km; LS-BL49551G-80C | 80km; LS-BL49551G-80I | 80km; LS-BL55491G-80C | 80km; LS-BL55491G-80I | 80km; LS-BL49551G-A0C | 100km; LS-BL49551G-A0I | 100km; LS-BL55491G-A0C | 100km; LS-BL55491G-A0I | 100km; LS-BL49551G-A2C | 120km; LS-BL49551G-A2I | 120km; LS-BL55491G-A2C | 120km; LS-BL55491G-A2I | 120km; LS-BL49551G-A5C | 150km; LS-BL49551G-A5I | 150km; LS-BL55491G-A5C | 150km; LS-BL55491G-A5I | 150km; LS-BL49551G-A6C | 160km; LS-BL49551G-A6I | 160km; LS-BL55491G-A6C | 160km; LS-BL55491G-A6I | 160km

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LINK-PP LS-BL49551G-A0C 1G BiDi SFP Specifications

The LINK-PP LS-BL49551G-A0C 1G BiDi SFP transceiver is a high-performance optical module that enables reliable long-distance data transmission. It supports 1.25 Gbps over single-mode fiber for distances of up to 100 km, with transmit and receive wavelengths of 1490nm and 1550nm respectively.

LINK-PP Part Number	LS-BL49551G-A0C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1550nm-RX	Max Cable Distance	100km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB BiDi	Receiver Type	PIN
TX Power	0 to +5dBm	RX Power	-28 to -1dBm
Receiver Sensitivity	<-28dBm	Receiver Overload	-1dBm
Operating Temperature Range	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Will it work with OEM-compatible switches from different vendors? By E***s on 2026-04-24

A: Yes. The module is designed for broad OEM compatibility. It has been widely deployed on various mainstream networking platforms. If you need a specific coding option, LINK-PP can usually provide compatible programming before shipment. By admin on 2026-04-24
Q: Can this 1G BiDi SFP really support a full 100km optical link? By S***t on 2026-04-01

A: Yes. This module is designed for Gigabit Ethernet transmission over single-mode fiber up to 100km, provided the fiber quality and overall optical link budget meet the required specifications. By admin on 2026-04-01
Q: What module should I use on the opposite end of the fiber? By E***r on 2025-07-16

A: This model transmits at 1490nm and receives at 1550nm. It must be paired with the complementary BiDi transceiver that transmits at 1550nm and receives at 1490nm (such as LS-BL55491G-A0C)to establish a working fiber link. By admin on 2025-07-17
Q: Does this module support DOM or DDM monitoring? By B***h on 2025-06-08

A: Yes. It supports Digital Optical Monitoring (DOM/DDM), allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current in real time. By admin on 2025-06-08

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J***t

Austria

Verified Purchase

4 .0

2026-06-20

One package had a slightly damaged outer box during transit. Fortunately, the optical transceiver itself worked perfectly and the 100km fiber link has been rock solid ever since.

18 Helpful vote Comments

K***l

Turkey

Verified Purchase

5 .0

2026-06-12

These modules have been running inside telecom aggregation cabinets for months. Despite wide daily temperature fluctuations, link quality remains excellent. The diagnostic monitoring helps our technicians detect connector contamination before customers notice service degradation. Very satisfied with both quality and consistency.

3 Helpful vote Comments

A***n

Australia

Verified Purchase

5 .0

2026-06-11

Excellent optics!

20 Helpful vote Comments

J***g

Turkey

Verified Purchase

4 .0

2026-04-19

Shipping took a little longer than expected, but every module arrived functional and passed our acceptance tests without any issues.

25 Helpful vote Comments

B***n

Macao

Verified Purchase

5 .0

2026-02-15

Plug and play.

51 Helpful vote Comments

N***r

Finland

Verified Purchase

5 .0

2025-12-26

We deployed more than 80 modules for long-distance enterprise fiber connectivity between regional offices. The 1490nm transmitter and 1550nm receiver pair performed exactly as specified. OEM compatibility testing covered Cisco, MikroTik, Ubiquiti, and several industrial Ethernet switches with excellent results. :)

56 Helpful vote Comments

A***k

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-12-17

Tested with several OEM switches in our lab before deployment. Every module was recognized correctly and the optical diagnostics worked flawlessly.

36 Helpful vote Comments

E***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-10-21

Stable connection.=D

62 Helpful vote Comments

A***n

Malaysia

Verified Purchase

5 .0

2025-10-13

Our utility company replaced aging fiber modules with these 1G BiDi SFP transceivers across multiple substations. Every unit established a stable 100km optical link immediately. DOM monitoring makes preventive maintenance much easier because we can monitor transmit power, receive power, voltage, and temperature remotely without additional testing equipment.

8 Helpful vote Comments

J***n

Belarus

Verified Purchase

5 .0

2025-10-03

Very good choice for long-distance Gigabit fiber links. Optical power readings stay consistent and the module runs cool in our equipment room.

52 Helpful vote Comments

K***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-07-26

Long reach, no issues.

4 Helpful vote Comments

A***r

Spain

Verified Purchase

5 .0

2025-07-04

Reliable module.

6 Helpful vote Comments

N***z

Germany

Verified Purchase

5 .0

2025-06-29

We purchased these for an ISP access project. Easy installation, accurate DDM monitoring, and excellent compatibility across different switch vendors.

80 Helpful vote Comments

N***t

Brazil

Verified Purchase

5 .0

2025-05-21

OEM compatible as promised.;)

5 Helpful vote Comments

P***z

Cambodia

Verified Purchase

5 .0

2025-03-19

Purchased for a large multi-site deployment connecting warehouses and branch offices over existing single-mode fiber. Every transceiver arrived with clean optical interfaces, worked immediately after installation, and integrated smoothly into our network monitoring platform through DOM reporting. Excellent solution for long-distance Gigabit Ethernet applications.

56 Helpful vote Comments

R***z

Bulgaria

Verified Purchase

5 .0

2025-03-15

Fast delivery.

77 Helpful vote Comments

P***n

Republic of Korea

Verified Purchase

5 .0

2025-02-07

Nice OEM alternative for enterprise networking. Saved a significant amount compared with original branded modules while keeping the same link stability.

12 Helpful vote Comments

C***s

Hong Kong

Verified Purchase

5 .0

2025-02-02

Works perfectly.

95 Helpful vote Comments

A***n

Belarus

Verified Purchase

5 .0

2024-11-15

Excellent price-performance ratio for a 1G 100km BiDi SFP. We'll definitely order more for future expansion.

92 Helpful vote Comments

A***n

Norway

Verified Purchase

5 .0

2024-10-19

Installed into an outdoor communication cabinet connected over single-mode fiber. Stable performance even after continuous operation.

59 Helpful vote Comments

M***l

Romania

Verified Purchase

5 .0

2024-07-11

Our engineering team selected this 100km simplex LC SFP module for a rural broadband backbone upgrade where available fiber resources were limited. Single-fiber transmission reduced cabling costs significantly. After continuous traffic testing, the Gigabit link remained stable with consistent optical power readings reported through DDM.

6 Helpful vote Comments

J***h

Ireland

Verified Purchase

5 .0

2024-06-07

Great replacement for expensive branded optics. The simplex LC interface helped us reuse existing SMF infrastructure and reduce deployment costs.

64 Helpful vote Comments

J***z

Taiwan, Province of China

Verified Purchase

5 .0

2024-05-13

Highly recommended.

10 Helpful vote Comments

E***e

Iran, Islamic Republic of

Verified Purchase

5 .0

2024-03-21

Using this 100km single fiber transceiver between two remote facilities. Signal quality has remained stable for several weeks without a single unexpected disconnect.

86 Helpful vote Comments

R***s

South Africa

Verified Purchase

5 .0

2024-02-29

Great value. :)

42 Helpful vote Comments

E***t

Philippines

Verified Purchase

5 .0