Intel E25GSFP28SR Optical Transceiver Sample Report

Intel offers the E25GSFP28SR optical transceiver, which supports 10G/25G Ethernet transmission up to 100 meters over multimode fiber. Moduletek Laboratory conducted sampling tests on this product to further understand its performance indicators and real-world application effect.

1. Product Introduction

The Intel E25GSFP28SR optical transceiver supports a link length of 70/100 meters on OM3/OM4 multimode fiber and operates within a commercial temperature range of 0-70℃. The official key parameters and physical appearance of the transceiver are as follows:

Table 1 Official Key Parameters

Type	Distance	Extinction Ratio	Operating Temperature	Cable Type	Wavelength	Transmit Power	Receiver Power	Transmit and Receive Wavelength
10G	70/100M	2dB(Min)	0~70℃	MMF	850nm	-8.4~+2.4dBm	-11~+3dBm	840~860nm
25G

INTEL E25GSFP28SR Optical Module Physical Drawing

Figure 1 Physical Drawing

2. Transceiver Identification

Insert the Intel E25GSFP28SR transceiver into the Intel E810XXVDA2BLK 25G dual-port fiber-optic network card and connect the fiber jumper. The transceiver can establish a normal link with the port indicator lit; the network card can recognize the transceiver information, including transceiver type, vendor name, model number, serial number, rate, transmission distance, etc. DOM data can be read normally, and all DOM data are within the threshold range with no alarm phenomenon.

Table 2 Intel E25GSFP28SR Reading Information on NIC

Item	Transceiver Reading Information at 10G	Transceiver Reading Information at 25G
LINK
Identification
DOM Data

3. Transceiver Key Parameters Test

The performance indicators of the Intel E25GSFP28SR sample transceiver on the test board were tested under the condition that the transceiver case temperature was 45℃ in the laboratory. The test results are as follows:

Table 3 Performance Indicators

	Transmit Optical Power	Power Consumption	Receive Sensitivity (without fiber)	Receive Sensitivity (with 100 m fiber)	Remarks
10G	-2.225dBm	0.549W	-14.778dBm	-14.508 dBm	0 BER
25G	-2.456dBm	0.552W	-12.845dBm	-12.492dBm	5E-5 BER

Optical eye diagram testing was performed on the sample transceiver case at 45℃, and the eye diagram templates and parameters are as follows:

Table 4 Eye Diagrams

Transceiver Eye Diagram at 10G	Transceiver Eye Diagram at 25G

Table 5 Intel E25GSFP28SR Optical Eye Diagram Parameters

	Temperature (°C)	Extinction Ratio (dB)	P-P Jitter (ps)	Rise Time (ps)	Fall Time (ps)	Margin Value (%)
10G	45	4.56	14.14	18.34	20.58	5.6
25G	45	4.29	11.52	16.14	17.76	21.0

From the actual test results, the key parameters and indicators of the transceiver are consistent with Intel’s official claims.

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Intel E25GSFP28SR Optical Transceiver Sample Report