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Moduletek SFP-25G-ER-I Optical Module Sample Performance Evaluation

Time: 2024-01-03
        Moduletek has newly launched the SFP-25G-ER-I-C10 optical module, which supports 25G Ethernet transmission up to 40 km over single-mode fiber. Moduletek Laboratory has tested the prototype of this product to help readers better understand its performance indicators and actual on-board application effect.
1. Product Overview
        The Moduletek SFP-25G-ER-I-C10 optical module supports a link length of 40 km on standard G.652 single-mode fiber (SMF) at 25G, and operates over the industrial temperature range (-40～85℃).
        The module requires RS-FEC to be enabled on the host port for full-range operation at 25G.
        Official ordering information and module appearance are as follows:
Table 1 Optical Module Ordering Information
Model
Product ID
Description
Pull Ring Color
SFP-25G-ER-C-C10
M008200
25GBASE ER, LC interface, up to 40 km
on singlemode fiber, commercial temperature
Red
SFP-25G-ER-I-C10
M008201
25GBASE ER, LC interface, up to 40 km
on singlemode fiber, commercial temperature
Red
  Note: The product ID is for our products:
     1. Product ID is the abbreviated order number of our standard product model.

SFP-25G-ER-I-C10 optical module appearance
Figure 1 Optical Module Appearance
2. On-Board Module Identification
        The SFP-25G-ER-I-C10 module was installed into a Cisco N9K-C93180YC-EX switch with a 10 dB attenuated patch cord.
        The module achieved a normal LINK status with the port indicator on; module information including type, vendor name, model, serial number, rate and transmission distance was correctly recognized by the switch.
        DOM data was readable and all values were within the threshold range with no alarms.
Table 2 On-Board Identification Results
Item
Information Read by Switch
LINK
Identification
DOM Data
FEC Mode
3. Key Module Parameter Testing
        Three-temperature tests were performed on the SFP-25G-ER-I-C10 sample module using a test board. The results are as follows:
Table 3 Optical Module Performance Test Results
Module Housing Test Temperature (℃)
Transmit Optical Power (dBm)
Receiving Sensitivity (dBm, BER=5E-5)
Power Consumption(W)
-40
-0.18
-23.0
1.40
40
0.38
-23.5
1.03
85
0.03
-23.0
1.47
        Optical eye diagram testing was performed on the sample module at a housing temperature of 85℃.
        The eye diagram mask and parameters are as follows:
SFP-25G-ER-I-C10 Optical Module Eye Diagrams
Figure 2 Optical Module Eye Diagrams

Table 4 Optical Eye Diagram Parameters
Temperature(°C)
Extinction Rratio(dB)
P-P Jitter(ps)
Rise Time(ps)
Fall Time(ps)
Margin Value (%)
85
8.51
12.3
16.08
16.86
23.8
        Based on actual test results, the key parameters of the module comply with Moduletek’s datasheet definition and are comparable to the performance of similar official Cisco modules.
        Moduletek provides cost-effective and high-performance commercial-temperature and industrial-temperature SFP-25G-ER optical modules.
        For further inquiries about the above content, please contact us at: sales@moduletek.com
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