ARISTA SFP-25G-MR-LR Optical Module Sample Report

ARISTA has model SFP-25G-MR-LR optical module products, can support 10/25G Ethernet transmission 10km in single-mode fiber, Moduletek Limited Laboratory of the product samples for testing, to facilitate a further understanding of the product's performance indicators and the effect of actual machine use.

1. Product Description

ARISTA SFP-25G-MR-LR optical module supports 10km link length on 10/25G standard single-mode fiber (SMF) G.652, and supports commercial temperature range (0~70℃); the official key parameter information and physical appearance of the module are as follows:

Table 1 ARISTA SFP-25G-MR-LR optical module official key parameters

PHY Type	Max Reach	Max Power Consumption	Operating Temperature	Cable Type	Wavelength	Transmit Power	Receive Power
25GBASE-MR-LR	10km	1.5W	0~70℃	SMF	1310nm	-7 to 2.0dBm	-13.3 to 2.0dBm

Figure 1 ARISTA SFP-25G-MR-LR Optical Module Physical Drawing

2. Module on-board identification

SFP-25G-MR-LR module is connected to ARISTA DCS-7160-48YC6-F switch, the module can be normally LINK, the port indicator is on; module information can be recognized by the switch, such as the module type, serial number, etc.; DOM data can be read, and the DOM data are within the threshold range, no alarm phenomenon.

Table 2 ARISTA SFP-25G-MR-LR Optical Module Upstream Identification

	Switch reading information of the module at 10G rate	Switch reading information of the module at 25G rate
LINK
Identify
DOM data

3. Module Key Parameter Testing

The performance indicators of the SFP-25G-MR-LR sample module on the test board are tested under 45°C in the laboratory module enclosure, and the test results are as follows;

Table 3 ARISTA SFP-25G-MR-LR optical module performance indicators

	Transmit optical power	Power consumption	Receive sensitivity (over fiber)	Receive sensitivity (over 10KM fiber)	Remarks
10G	-3.2dBm	0.726W	-17.5dBm	-17.6dBm	0 BER
25G	-2.6dBm	0.873W	-17.8dBm	-17.7dBm	5E-5 BER

The sample module enclosure was tested at 45°C optical eye diagram with the following eye diagram template and parameters:

Table 4 ARISTA SFP-25G-MR-LR Optical Module Eye Diagrams

Eye diagram of module at 10G rate	Eye diagram of module at 25G rate

Table 5 ARISTA SFP-25G-MR-LR optical module eye diagram parameters

	Temperature (°C)	Extinction ratio (dB)	P-P jitter (ps)	Rise time (ps）	Descent time (ps)	Margin value (%)
10G	45	5.43	12.74	19.04	27.16	5.6
25G	45	4.298	12.78	14.88	17.04	11.5

From the actual test situation, the module's key parameters and indicators are in line with ARISTA's official claims.

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ARISTA SFP-25G-MR-LR Optical Module Sample Report