H3C has model SFP-XG-LX-SM1270-BIDI optical module products, can be in single-mode fiber to support 10G Ethernet transmission of 10KM, 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
        H3C SFP-XG-LX-SM1270-BIDI optical module supports 10KM link length on 10G standard single-mode fiber (SMF) G.652. The official key parameter information and the physical appearance of the module are as follows:
Table 1 SFP-XG-LX-SM1270-BIDI Optical Module Key Parameter Information
External Model
Interface index (dBm)
Center wavelength (nm)
Fiber Mode
Fiber Diameter (μm)
Transmission Distance
Transmission Rate
Received Optical Power
Output Optical Power
SFP-XG-LX-SM1270-BIDI
-8.2~-0.5
-14.4~0.5
 Transmitter (TX ):1270
 Receiver (RX ):1330
SMF
9/125
10km
10.31Gbps
 
Description:
  ● BIDI optical modules use different center wavelengths in the transmit and receive directions, thus enabling bi-directional transmission of optical signals within the same fiber.
  ● BIDI modules must be used in pairs, for example, if SFP - XG - LX -SM1270- BIDI is used at one end, SFP - XG - LX -SM1330- BIDI must be used at the other end.
SFP-XG-LX-SM1270-BIDI Optical Module Physical Appearance
Figure 1 SFP-XG-LX-SM1270-BIDI Optical Module Physical Appearance
2. Identify the module on the machine
        SFP-XG-LX-SM1270-BIDI module will be connected to H3C S6850-56HF switch, access to the jumper, the opposite end of the access to the SFP-XG-LX-SM1330-BIDI module, the module can be a normal LINK, the port indicator light; module information can be recognized by the switch normally, such as the module type, the manufacturer's name, the type of connector, wavelength, transmission distance, etc.; DOM data can be read, and the DOM data are all within the threshold range without alarm.
Table 2 SFP-XG-LX-SM1270-BIDI Optical Module Upload Recognition Information
Item
 Switch reading information
LINK
 Identify
DOM Data
<
 
 
3. Module key parameters testing
        a. Laboratory module shell 45 ℃ conditions, the SFP-XG-LX-SM1270-BIDI sample module in the test version of the performance indicators are tested, the test results are as follows;
        Note: The H3C SFP-XG-LX-SM1330-BIDI module is connected at the opposite end.
Table 3 SFP-XG-LX-SM1270-BIDI optical module performance index test results 
Parameter
Test Data
Unit
Remarks
 Transmit optical power
-2.5
dBm
 
 Receiving sensitivity (without fiber)
-16.0
dBm
0 BER
 Receive sensitivity (over 10km fiber)
-15.8
dBm
0 BER
 Power consumption
0.657
W
 

        b. Sample module shell 45 ℃ light eye diagram test, eye diagram template and parameters are as follows:
SFP-XG-LX-SM1270-BIDI optical module eye diagram template
Figure 2 SFP-XG-LX-SM1270-BIDI optical module eye diagram template

Table 4 SFP-XG-LX-SM1270-BIDI optical module eye diagram parameters
Temperature (℃)
Extinction ratio (dB)
P-P jitter (ps)
Rise time (ps)
Descent time (ps)
Margin value (%)
45
5.98
17.5
24.08
39.90
19

        From the actual test situation, the module's key parameters and indexes are in line with H3C'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