H3C SFP-XG-LX-SM1270-BIDI Optical Module Sample Report

H3C provides the SFP-25G-LR-SM1310 optical module, which supports 25G Ethernet transmission up to 10 km over single-mode fiber.

Moduletek Laboratory has tested samples of this product to help users better understand its performance specifications and actual on-site application behavior.

1. Product Introduction

The H3C SFP-25G-LR-SM1310 optical module supports a link distance of 10 km over standard G.652 single-mode fiber (SMF) at 25G.

Key official specifications and the physical appearance of the module are shown below:

Table 1 Key Optical Module Specifications

External Model	Center Wavelength (nm)	Fiber Mode	Fiber Diameter (μm)	Transmission Distance	Interface Index (dBm)
					Output Optical Power	Received Optical Power
SFP-25G-LR-SM1310	1310	SMF	9/125	10km	-7~+2	-13.3~+2

Figure 1 Optical Module Appearance

2. Module Identification Test

The SFP-25G-LR-SM1310 module was installed into an H3C S6850-56HF switch with a fiber patch cord connected.

The module established a normal LINK, and the port indicator illuminated correctly.

The switch successfully recognized complete module information including type, vendor name, connector type, wavelength, and transmission distance.

Digital Optical Monitoring (DOM) data could be read normally, with all values within the specified threshold range and no alarms present.

Table 2 Module Recognition & Status Information

Item	Information Read by Switch
LINK
Identification
DOM Data

3. Key Parameter Performance Test

a. Electrical & Optical Performance Test

Performance testing of the SFP-25G-LR-SM1310 sample was conducted in a laboratory chamber at a constant temperature of 45°C.

The measured results are as follows:

Table 3 Measured Module Performance Parameters

Parameter	Test Data	Unit	Remarks
Transmit Optical Power	-1.8	dBm
Receiving Sensitivity (without fiber)	-15.5	dBm	5E-5 BER
Receive Sensitivity (with 10km fiber)	-15.4	dBm	5E-5 BER
Power Consumption	0.79	W