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CISCO SFP-25G-ER-I Optical Module sample report

Time: 2023-12-05
        Cisco / CISCO has model SFP-25G-ER-I optical module products, can be in single-mode fiber to support 25G Ethernet transmission of 40KM, Moduletek Limited Laboratory of the product samples for testing, to facilitate a further understanding of the product's performance indicators and the effect of the actual machine use.
1. Product Introduction
        CISCO SFP-25G-ER-I optical module supports 40KM link length on 25G standard single-mode fiber (SMF) G.652 and supports industrial temperature range (-40～85℃); the module requires FEC mode of RS-FEC on the host port for full-range operation under 25G. The official key parameter information and the physical appearance of the module are as follows:
                    Cisco SFP-25G-ER-I
                    The Cisco 25GBASE-ER Module supports a link length of 40 kilometers on standard Single-Mode Fiber (SMF)G.652 at 25G.
                    The module requires RS-FEC on the host ports for full reach operation at 25G.This module has an industrial temperature range.
Table 1 Key message parameters
Product
Max Power
Consumption (W)
Transmit Power
(dBm)*
Recelve Power(dBm)
Transmit and Receive
Wavelength (nm)
Maximum
Minimum
Maximum
Minimum
SFP-25G-ER-I
1.5W
+6.0
-3.0
-4.0
-21.0
1295 to 1310

Physical appearance of the module
Figure 1 Physical appearance of the module
2. Module Identification
        Connect the SFP-25G-ER-I module to CISCO N9K-C93180YC-EX switch, and access the 10dBm attenuation jumper, the module can be normally LINK, and the port indicator is on; the module information can be normally recognized by the switch, such as the module type, vendor name, model number, serial number, rate, transmission distance, etc.; the DOM data can be read, and the DOM data is within the threshold range, with no data loss. can read DOM data, and the DOM data are all within the threshold range, and there is no alarm phenomenon.
Table 2 Recognition Information
Item
Switch reading information
LINK
Recognition
DOM data
FEC mode

3. Module key parameters test
        The performance parameters of the SFP-25G-ER-I sample module on the test plate are tested under 45°C in the laboratory module enclosure, and the test results are as follows;
Table 3 Performance key parameters
  Parameter
Test data
Unit
Remarks
  Transmit optical power
1.21
dBm
 
  Receive sensitivity (over fiber)
-23.80
dBm
5E-5 BER
  Receive sensitivity (over 40km fiber)
-24-78
dBm
5E-5 BER
  Power consumption
1.057
W
 
        The sample module housing was tested with 45°C optical eye diagrams with the following eye diagram templates and parameters:
Eye diagram template
Figure 2 Eye diagram template

Table 4 Eye diagram parameters
Temperature (°C)
Extinction ratio (dB)
P-P jitter (ps)
Rise time (ps)
Descent time (ps)
Margin value (%)
45
9.83
10.20
17.16
16.20
26.1
        From the actual test situation, the key parameters of the module are in line with CISCO's official claims.
        Moduletek Limited is at your service.
        If you have any questions about the above content, you can contact us by Email : web@moduletek.com

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