CISCO has model SFP-10/25G-LR-S optical module products, which can support 10/25G Ethernet transmission of 10KM in single-mode fiber, Moduletek Limited Laboratory has tested the sample of this product, which is convenient for you to know more about the performance index of this product and the effect of using the actual machine.
1. Product Introduction
        CISCO SFP-10/25G-LR-S 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 CISCO SFP-10/25G-LR-S Optical Module Official Key Parameters
Type
Distance
Max Power Consumption
Operating Temperature
Cable Type
Wavelength
Transmit Power
Receive Power
Transmit and Receive Wavelength
10G
10KM
1.3W
0~70℃
SMF
1310nm
-8.2~+0.5dBm
-14.4~+0.5dBm
1260~1355nm
25G
-7~+2dBm
-13.3~+2dBm
1295~1325nm


CISCO SFP-10/25G-LR-S Optical Module Physical Figure
Figure 1 CISCO SFP-10/25G-LR-S Optical Module Physical Figure
2. Module identification
        Connect the SFP-10/25G-LR-S module to CISCO C9300 switch, the module can be normally LINK, the port indicator is on; the module information can be normally recognized by the switch, such as the module type, serial number, etc.; the DOM data can be read, and the DOM data are all within the threshold range, no alarm phenomenon.
Table 2 CISCO SFP-10/25G-LR-S Optical Module Upstream Recognition
 
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 parameters test
        The performance indicators of the SFP-10/25G-LR-S 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 CISCO SFP-10/25G-LR-S optical module performance indicators
 
Transmit optical power
Power consumption
Receive sensitivity
(over fiber) 
Receive sensitivity
(over 10KM fiber) 
Remarks
10G
-0.78dBm
0.8604W
-15.77dBm
-15.88dBm
0 BER
25G
-0.53dBm
0.909W
-13.99dBm
-14.25dBm
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 CISCO SFP-10/25G-LR-S optical module eye diagrams
Module eye diagram at 10G rate 
Module eye diagram at 25G rate
 
Table 5 CISCO SFP-10/25G-LR-S optical module eye diagram parameters
 
Temperature (°C)
Extinction ratio (dB)
P-P jitter (ps)
Rise time (ps)
Fall time (ps) 
Margin value (%)
10G
45
6.48
13.3
19.32
28.14
29.7
25G
45
5.06
10.8
16.38
21.66
35.8

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