Does this module support DOM or DDM monitoring?

Yes. It supports Digital Diagnostic Monitoring (DDM/DOM), allowing you to monitor transmit power, receive power, temperature, supply voltage, and laser bias current from supported switches.

Can I mix this module with an OEM-branded 155M 1310nm 40km SFP at the opposite end?

Yes. As long as both transceivers use the same 155Mbps standard, 1310nm wavelength, duplex LC interface, single-mode fiber, and compatible transmission distance, they can normally interoperate without issue.

Can this module be installed in outdoor communication cabinets?

Yes, as long as the equipment cabinet maintains a commercial operating environment. The LS-SM3101-40C is a Commercial Temperature (0°C to 70°C) 155M SFP transceiver, making it suitable for telecom rooms, enterprise equipment rooms, and climate-controlled outdoor cabinets. For harsh outdoor environments without temperature control, an industrial-temperature optical module such as the LS-SM3101-40I is recommended.

Can I use this for a fiber link shorter than 40km?

Yes. Many customers deploy it on shorter single-mode fiber links. If the actual distance is very short, it's recommended to verify the optical power budget and use an optical attenuator if required by your equipment.

Will this LS-SM3101-40C work with Cisco, Juniper, Aruba, MikroTik, or other switch brands?

Yes. The module supports OEM coding for many mainstream networking and telecom equipment vendors. Simply specify your equipment vendor before ordering, and the transceiver will be programmed for plug-and-play compatibility.

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LINK-PP LS-SM3101-40C 155M SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SM3101-40C 155M SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 181591
Price: 7.052 USD
Availability: InStock
Rating: 5 (52 reviews)

Product: LINK-PP LS-SM3101-40C 155M SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module
SKU: 181591
P/N: LS-SM3101-40C
Price: $ 8.2
Stock: 780 in Stock
Sold: 1.2K
Product URL: https://www.l-p.com/products/475948.htm

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52 Reviews

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$ 8.2

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Manufacture: LINK-PP P/N: LS-SM3101-40C SKU: 181591

Compatible:: Cisco; LINK-PP; Allied Telesis; Brocade; DELL; Extreme; Foundry; H3C; HW

Compatible P/N:: LS-SM3101-10C | 10km; LS-SM3101-10I | 10km; LS-SM3101-15C | 15km; LS-SM3101-20C | 20km; LS-SM3101-20I | 20km; LS-SM3101-40C | 40km; LS-SM3101-40I | 40km; LS-SM5501-80C | 80km; LS-SM5501-80I | 80km; LS-SM5501-A2C | 120km; LS-SM5501-A2I | 120km

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Estimated delivery time : 3-10 days.

5-Year Warranty 30-Day Returns 30-Day Exchange

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LINK-PP LS-SM3101-40C 155M SFP Specifications

The LINK-PP LS-SM3101-40C is a low-cost 155Mbps SFP optical transceiver operating at a 1310nm wavelength. Designed for single-mode fiber (SMF) applications, it supports transmission distances of up to 40km while ensuring stable signal quality and low attenuation, making it ideal for long-distance network deployments.

LINK-PP Part Number	LS-SM3101-40C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm	Max Cable Distance	40km
Connector	Duplex LC	Transmitter Type	DFB 1310nm
Media	SMF	DOM Support	Yes
TX Power	-14 to -8dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	<-32dBm	Receiver Overload	-1dBm
Commercial Temperature Range	0 to 70°C	Protocols	GR-468, MSA Compliant

Key Features of LINK-PP LS-SM3101-40C 155M SFP

Designed for extended reach and operational visibility, this LINK-PP LS-SM3101-40C 155M SFP module supports optical links up to 40km and integrates the Digital Optical Monitoring (DOM) feature. Combined with a duplex LC interface, it enables real-time diagnostics, simplified maintenance, and reliable long-haul fiber connectivity.

LINK-PP LS-SM3101-40C Optical Module

The LINK-PP LS-SM3101-40C optical module is designed with an advanced DFB laser and a responsive PIN photodiode receiver, providing excellent optical efficiency, strong signal stability, and consistent long-range transmission performance in single-mode fiber networks.

LS-SM3101-40C: Reliable 155Mbps Connectivity

The LINK-PP LS-SM3101-40C SFP module ensures consistent 155Mbps data transmission, making it suitable for Fast Ethernet and SONET/SDH OC-3/STM-1 applications.

LS-SM3101-40C Module with 1310nm Wavelength

The LINK-PP LS-SM3101-40C module operates in the 1310nm window with low chromatic dispersion and strong transmission stability. This allows for efficient long-distance communication with little signal loss over single-mode fiber.

LS-SM3101-40C Module Supporting 40km Transmission

Offering dependable 40km transmission performance, the LINK-PP LS-SM3101-40C 155M SFP module is perfect for metropolitan area networks (MANs), access networks, and backbone links where long distances are required.

LS-SM3101-40C Module with Duplex LC Interface

The duplex LC connector includes a compact and industry-standard interface, ensuring easy integration with existing fiber infrastructure and enabling high-density deployments in switches and routers.

LS-SM3101-40C Module with DOM for Real-Time Monitoring

Supporting comprehensive Digital Optical Monitoring (DOM), the LINK-PP LS-SM3101-40C module provides real-time access to essential diagnostic parameters such as temperature, voltage, transmit power, and receive power. These advanced monitoring capabilities facilitate proactive network management, reduce maintenance complexity, and improve overall system reliability.

LINK-PP LS-SM3101-40C 155M SFP Certification

Crafted to ISO 9001 standards and validated through CE, RoHS, and FCC compliance, the LINK-PP module stands for dependable quality and worldwide trust.

LS-SM3101-40C Quality Testing Program

Each LINK-PP module is thoroughly examined for transmission accuracy, compatibility reliability, and operational consistency before shipment.

LS-SM3101-40C Quality Certifications

Every module is supported by certified quality assurance processes that reinforce reliable deployment and stable network integration.

LS-SM3101-40C Certified for Reliable Host-Device Compatibility

Thorough compatibility testing confirms reliable integration with LINK-PP equipment, ensuring consistent performance and dependable optical connectivity.

Rigorous Testing Ensures Reliable SFP Performance

Each transceiver is subjected to strict operational analysis to confirm reliable communication performance and long-term stability. For additional guidance, please refer to the LINK-PP Test Support Center.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

Confirms wavelength correctness and optical output stability within defined transmission parameters.

Eye Pattern Test

Ensures a clean signal waveform with little distortion for efficient data transmission.

Bit Error Rate Test

Verifies low error rates and reliable communication performance under real-world conditions.

Temperature Test

Assesses module stability and performance across a wide temperature range.

Product Shipping for LINK-PP LS-SM3101-40C 155M SFP

Every LINK-PP module is packaged with transit protection in mind to ensure dependable delivery and reliable product condition upon arrival.

Anti-Static Protective Packaging

Specialized ESD-control packaging enhances transport safety and reduces the possibility of static discharge damage.

Shock-Resistant Transport Protection

Secure transport protection helps reduce damage risks associated with rough handling and shipping movement.

Fast Order Processing and Dispatch

Efficient warehouse and logistics management contribute to faster shipping turnaround times.

Global Logistics and International Delivery

Global logistics management helps ensure efficient transportation and dependable overseas shipment handling.

LINK-PP LS-SM3101-40C 155M SFP Usage Demonstration

The LINK-PP LS-SM3101-40C SFP provides stable 155Mbps optical connectivity over distances up to 40km, with real-time DOM monitoring for enhanced network visibility. It is widely deployed in Fast Ethernet links, SONET OC-3/SDH STM-1 systems, metropolitan access networks, and long-distance fiber backbones.

LS-SM3101-40C Technical Support

LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LS-SM3101-40C modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LS-SM3101-40C 155M SFP After-Sales Assurance

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

Model Comparison Table

	Current Model LS-SM3101-40C	LS-SM3101-15C	LS-SM3101-20C	LS-SM3101-10C	LS-SM5501-80C	LS-MM8501-S5C

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	155Mbps	155Mbps	155Mbps	155Mbps	155Mbps	155Mbps
Wavelength	1310nm	1310nm	1310nm	1310nm	1550nm	850nm
Connector	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC
Cable Distance (Max)	40km	15km	20km	10km	80km	550m
Cable Type	SMF	SMF	SMF	SMF	SMF	MMF
TX Power	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm
Receiver Sensitivity	-32 to -6dBm	-32dBm	-32dBm	-32dBm	< -32dBm	-23dBm
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	DFB 1310nm	DFB	FP	FP	DFB	VSCEL
DOM Support	Yes	Yes	Yes		Yes
Receiver Overload	-1dBm			-1dBm
Protocols	GR-468, MSA Compliant	GR-468, MSA Compliant	IEEE802.3ab, GR-468, MSA Compliant	IEEE802.3ab, GR-468, MSA Compliant	GR-468, MSA Compliant	MSA Compliant

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Q: Does this module support DOM or DDM monitoring? By P***z on 2026-04-05

A: Yes. It supports Digital Diagnostic Monitoring (DDM/DOM), allowing you to monitor transmit power, receive power, temperature, supply voltage, and laser bias current from supported switches. By admin on 2026-04-05
Q: Can I mix this module with an OEM-branded 155M 1310nm 40km SFP at the opposite end? By A***l on 2025-11-05

A: Yes. As long as both transceivers use the same 155Mbps standard, 1310nm wavelength, duplex LC interface, single-mode fiber, and compatible transmission distance, they can normally interoperate without issue. By admin on 2025-11-06
Q: Can this module be installed in outdoor communication cabinets? By Z***k on 2025-07-14

A: Yes, as long as the equipment cabinet maintains a commercial operating environment. The LS-SM3101-40C is a Commercial Temperature (0°C to 70°C) 155M SFP transceiver, making it suitable for telecom rooms, enterprise equipment rooms, and climate-controlled outdoor cabinets. For harsh outdoor environments without temperature control, an industrial-temperature optical module such as the LS-SM3101-40I is recommended. By admin on 2025-07-15
Q: Can I use this for a fiber link shorter than 40km? By S***l on 2025-04-24

A: Yes. Many customers deploy it on shorter single-mode fiber links. If the actual distance is very short, it's recommended to verify the optical power budget and use an optical attenuator if required by your equipment. By admin on 2025-04-24
Q: Will this LS-SM3101-40C work with Cisco, Juniper, Aruba, MikroTik, or other switch brands? By S***r on 2024-07-23

A: Yes. The module supports OEM coding for many mainstream networking and telecom equipment vendors. Simply specify your equipment vendor before ordering, and the transceiver will be programmed for plug-and-play compatibility. By admin on 2024-07-24

Customer Reviews
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James Scott

Bangladesh

Verified Purchase

5 .0

2026-05-31

The 1310nm 40km specification matched our existing fiber route perfectly. Link quality has been excellent since deployment.

53 Helpful vote Comments

Anthony White

Poland

Verified Purchase

5 .0

2026-05-07

Perfect fit for replacing discontinued STM-1 optics while keeping our existing network unchanged.

85 Helpful vote Comments

Morgan Torres

Argentina

Verified Purchase

5 .0

2026-03-22

Packaging was neat, labels were clear, and every transceiver worked immediately after installation.

16 Helpful vote Comments

Emily Smith

South Africa

Verified Purchase

4 .0

2026-02-23

The modules worked perfectly after installation. Shipping took a little longer than expected, but performance has been completely reliable.

77 Helpful vote Comments

Caroline Green

Germany

Verified Purchase

5 .0

2026-02-05

We purchased these modules for a utility communication network that still relies on STM-1 transmission. Installation was straightforward, and every link came online without additional configuration.

18 Helpful vote Comments

Kayla Adams

Israel

Verified Purchase

5 .0

2026-02-01

Commercial temperature version was exactly what we needed.

3 Helpful vote Comments

Emma Rogers

Spain

Verified Purchase

5 .0

2025-12-19

Our engineering team evaluated these optics for a long-distance utility communication network. Optical performance remained stable over single-mode fiber, and the modules met all project requirements for STM-1 connectivity. We will continue purchasing them for future maintenance contracts.

92 Helpful vote Comments

Rebecca Johnson

Macao

Verified Purchase

5 .0

2025-12-02

We deployed a full batch across several transmission cabinets during a modernization project. Every module synchronized properly, compatibility was excellent, and the overall installation process was smooth from start to finish.

25 Helpful vote Comments

Kevin Mitchell

Maldives

Verified Purchase

5 .0

2025-11-14

These transceivers have become our preferred choice for supporting legacy telecom infrastructure. Reliable operation, consistent quality, and competitive pricing make them a practical alternative to OEM optics for long-term network maintenance.

65 Helpful vote Comments

Jeffrey Ramirez

Romania

Verified Purchase

5 .0

2025-07-02

Stable STM-1 link right after installation.

53 Helpful vote Comments

Timothy Roberts

Nepal

Verified Purchase

4 .0

2025-06-11

One shipping carton had minor cosmetic damage, although the anti-static packaging protected every transceiver. Product quality itself is excellent.

22 Helpful vote Comments

Hannah Lee

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-06-02

Our customer operates a legacy SDH backbone connecting several remote facilities. We installed these LS-SM3101-40C modules across multiple 40km fiber spans, and every link synchronized successfully. Signal quality remained stable throughout burn-in testing, making them a dependable replacement for original branded optics.

76 Helpful vote Comments

Brianna Rogers

Hong Kong

Verified Purchase

5 .0

2025-05-15

Installed in a railway communication system using single-mode fiber. The connection has remained reliable during continuous operation.

39 Helpful vote Comments

William Clark

Turkey

Verified Purchase

5 .0

2025-05-04

We'll order another batch soon.

83 Helpful vote Comments

Jacob Wilson

Norway

Verified Purchase

5 .0

2025-03-11

Ordered multiple pieces for a government communication project. All modules performed consistently and passed commissioning tests.

69 Helpful vote Comments

Timothy Perez

Cambodia

Verified Purchase

5 .0

2024-11-27

Great value for legacy SONET networks.

70 Helpful vote Comments

Victoria Turner

Cambodia

Verified Purchase

5 .0

2024-11-05

Reliable 1310nm OC-3 module.

58 Helpful vote Comments

Jeffrey Stewart

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2024-09-04

During a scheduled network upgrade, we replaced several aging 155Mbps transceivers with this model. Installation required no additional adjustments, and every duplex LC connection established immediately. The modules have operated continuously without alarms or unexpected interruptions.

76 Helpful vote Comments

Sophia Roberts

Australia

Verified Purchase

5 .0

2024-08-11

Good replacement for expensive OEM optics.

62 Helpful vote Comments

Adam Moore

Japan

Verified Purchase

5 .0

2024-07-05

Installed without any compatibility issues.

22 Helpful vote Comments

Paige Rodriguez

Argentina

Verified Purchase

5 .0

2024-07-05

We tested these modules with several OEM-coded devices before rollout. Every unit was recognized correctly and operated normally throughout acceptance testing.

65 Helpful vote Comments

Steven Hill

Hong Kong

Verified Purchase

5 .0

2024-06-05

These modules are ideal for customers maintaining existing OC-3 fiber networks. Easy installation and dependable performance.

3 Helpful vote Comments

Charles Walker

Spain

Verified Purchase

5 .0

2024-04-27

Reliable OEM-compatible module for long-distance 155Mbps fiber links. Excellent value for maintenance projects.

81 Helpful vote Comments

Rachel Green

Norway

Verified Purchase

5 .0

2024-04-27

Used these 155M optical transceivers to replace aging OEM modules in our telecom rack. Performance has remained stable for several weeks of continuous service.

99 Helpful vote Comments

G***h

Brazil

Verified Purchase

5 .0

2024-04-21

Putting in the order was super easy and shipping was really quick.

151 Helpful vote Comments

Morgan Campbell

New Zealand

Verified Purchase

5 .0

2024-04-20

We maintain telecom equipment that still depends on OC-3 transmission. These modules integrated seamlessly into the existing infrastructure, and compatibility was exactly as expected after OEM coding. The consistent manufacturing quality across all units was especially impressive.

39 Helpful vote Comments

Robert Perez

Mexico

Verified Purchase

5 .0

2024-04-16

Nice solution for maintaining legacy SDH infrastructure without paying OEM prices. Build quality is consistent across the entire batch.

40 Helpful vote Comments

Justin Martinez

Ireland

Verified Purchase

5 .0