Name: SMF, 1550nm-RX, 40km, LC
Brand: Huawei
SKU: SFP-GE-LH40-SM1550-BIDI

Question 1

What is the SFP-GE-LH40-SM1550-BIDI transceiver?

Accepted Answer

The SFP-GE-LH40-SM1550-BIDI is a hot-pluggable 1 Gbps SFP module that delivers bidirectional 1550 nm single-mode fiber transmission up to 40 km using LC connectors.

Question 2

Which fiber type and connector does the SFP-GE-LH40-SM1550-BIDI support?

Accepted Answer

It supports single-mode fiber (SMF) with LC duplex connectors for bidirectional data transmission over a single fiber strand.

Question 3

What is the maximum transmission distance of this module?

Accepted Answer

This module provides reliable data transmission over distances up to 40 km on standard single-mode fiber.

Question 4

What operating wavelength does the SFP-GE-LH40-SM1550-BIDI use?

Accepted Answer

It uses a 1550 nm receiver wavelength for downstream signals and transmits upstream on a complementary wavelength for bidirectional operation.

Question 5

How does bidirectional (BiDi) technology work in this SFP?

Accepted Answer

Bidirectional technology uses two different wavelengths on a single fiber—one for transmit and one for receive—halving fiber consumption and simplifying deployment.

Question 6

What data rate and standards does this SFP module support?

Accepted Answer

It supports 1 Gbps (1000Base-BX) in full compliance with IEEE 802.3z and SFP MSA specifications.

Question 7

Is the SFP-GE-LH40-SM1550-BIDI hot-swappable?

Accepted Answer

Yes, the module is fully hot-swappable, allowing installation or removal without powering down the host device.

Question 8

Does this transceiver support Digital Diagnostics Monitoring (DDM)?

Accepted Answer

Yes, it features SFF-8472–compliant DDM for real-time monitoring of optical power, temperature, voltage, and transmit/receive bias.

Question 9

What is the operating temperature range for this module?

Accepted Answer

It operates reliably from 0 °C to 70 °C (commercial range) and offers an extended range option to –40 °C to 85 °C if required.

Question 10

What is the typical power consumption of the SFP-GE-LH40-SM1550-BIDI?

Accepted Answer

Typical power draw is below 1 W (maximum 1.0 W), ensuring low energy usage and minimal heat generation.

Question 11

What is the MTBF (Mean Time Between Failures) of this SFP transceiver?

Accepted Answer

The module offers an MTBF of over 1,000,000 hours, providing high reliability for critical network links.

Question 12

How do I install the SFP-GE-LH40-SM1550-BIDI in my switch or router?

Accepted Answer

Simply insert the module into an available SFP port until it clicks, connect the LC fiber cable, and verify link status via your device’s management interface.

Question 13

What are common applications for the 1550 nm, 40 km BiDi SFP?

Accepted Answer

Typical uses include campus backbones, metro rings, ISP access links, and fiber-to-the-home (FTTH) networks requiring long reach with minimal fiber.

Question 14

Is this SFP module compatible with leading networking vendors?

Accepted Answer

Yes, it’s guaranteed compatible with major OEMs (Cisco, Juniper, HP, Dell, Huawei) when operating in generic or third-party mode.

Question 15

Does the SFP-GE-LH40-SM1550-BIDI require any special configuration?

Accepted Answer

No special configuration is needed; it auto-negotiates with the host device and is ready for plug-and-play operation.

Question 16

What warranty and support are provided with this SFP transceiver?

Accepted Answer

The module includes a 1-year warranty and lifetime online technical support for fault diagnosis and replacement guidance.

Question 17

How can I verify the module’s link performance after installation?

Accepted Answer

Use your switch or router’s diagnostic interface or DDM software to monitor real-time optical power levels and error statistics.

	SFP-GE-LH40-SM1550-BIDI	CWDM-SFPGE-1571	eSFP-GE-ZX100-SM1550	CWDM-SFPGE-1551	DWDM-SFPGE-1542-94
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Form Factor	SFP	SFP	SFP	SFP	SFP
Data Rate	1G	1G	1G	1G	1G
Connector Type	LC	LC	LC	LC	LC
Wavelength	1550 nm	CWDM (1270 nm - 1330 nm)	1550 nm	1551 nm	1542.94 nm
Transmission Distance	Long-Range	Extended-Range	Long-Range	Long-Range	Long-Range
Fiber Type	Single-mode	Single-mode	Single-mode	Single-mode	Single-mode
Max Distance	40 km	80 km	80 km	80 km	80 km
Supported Protocols	Ethernet	Ethernet, Fibre Channel	Ethernet	Ethernet	Ethernet
Network Interface	Ethernet	Fiber	Fiber	Ethernet	Fiber
Power Consumption	N/A	3.5W	2.5 W	1.0W	0.8W
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Compatibility	N/A	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista
Product Name	SFP-GE-LH40-SM1550-BIDI	CWDM-SFPGE-1571	eSFP-GE-ZX100-SM1550	CWDM-SFPGE-1551	DWDM-SFPGE-1542-94
Height	N/A	0.32 inches	0.28 inches	0.53 inches	0.67 in
Width	N/A	0.72 inches	0.86 inches	2.23 inches	0.42 in
Depth	N/A	1.05 inches	3.46 inches	0.33 inches	1.3 in
Weight	N/A	0.11 lbs	0.1 lbs	0.07 lbs	0.13 lbs

	SFP-GE-LH40-SM1550-BIDI	CWDM-SFPGE-1571	eSFP-GE-ZX100-SM1550	CWDM-SFPGE-1551	DWDM-SFPGE-1542-94
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Form Factor	SFP	SFP	SFP	SFP	SFP
Data Rate	1G	1G	1G	1G	1G
Connector Type	LC	LC	LC	LC	LC
Wavelength	1550 nm	CWDM (1270 nm - 1330 nm)	1550 nm	1551 nm	1542.94 nm
Transmission Distance	Long-Range	Extended-Range	Long-Range	Long-Range	Long-Range
Fiber Type	Single-mode	Single-mode	Single-mode	Single-mode	Single-mode
Max Distance	40 km	80 km	80 km	80 km	80 km
Supported Protocols	Ethernet	Ethernet, Fibre Channel	Ethernet	Ethernet	Ethernet
Network Interface	Ethernet	Fiber	Fiber	Ethernet	Fiber
Power Consumption	N/A	3.5W	2.5 W	1.0W	0.8W
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Compatibility	N/A	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista
Product Name	SFP-GE-LH40-SM1550-BIDI	CWDM-SFPGE-1571	eSFP-GE-ZX100-SM1550	CWDM-SFPGE-1551	DWDM-SFPGE-1542-94
Height	N/A	0.32 inches	0.28 inches	0.53 inches	0.67 in
Width	N/A	0.72 inches	0.86 inches	2.23 inches	0.42 in
Depth	N/A	1.05 inches	3.46 inches	0.33 inches	1.3 in
Weight	N/A	0.11 lbs	0.1 lbs	0.07 lbs	0.13 lbs

SFP-GE-LH40-SM1550-BIDI

$5,000,000+

Officially Accredited

Next-Gen IT