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H3C SFP-XG-LX-SM1270-BIDI Optical Module Sample Report

Time: 2023-12-13
        H3C provides the SFP-XG-LX-SM1270-BIDI optical module, which supports 10G Ethernet transmission up to 10 km over single-mode fiber.
        Moduletek Laboratory has tested samples of this product to help users better understand its performance specifications and actual on‑site application behavior.
1. Product Introduction
        The H3C SFP-XG-LX-SM1270-BIDI optical module supports a link distance of 10 km over standard G.652 single-mode fiber (SMF) at 10G.
        Key official parameters and the physical appearance of the module are shown below:
Table 1 Key Optical Module Specifications
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

Notes:
  ● BIDI optical modules use different wavelengths for transmit and receive paths, enabling bi‑directional transmission over a single fiber.
  ● BIDI modules must be used in pairs. For example, if SFP-XG-LX-SM1270-BIDI is deployed at one end, SFP-XG-LX-SM1330-BIDI must be used at the opposite end.
Physical Appearance of SFP-XG-LX-SM1270-BIDI
Figure 1 Physical Appearance of SFP-XG-LX-SM1270-BIDI
2. On‑Board Module Identification
        The SFP-XG-LX-SM1270-BIDI module was installed into an H3C S6850-56HF switch, with a fiber patch cord connected to an SFP-XG-LX-SM1330-BIDI module at the remote end.
        The module established a normal LINK, and the port indicator illuminated correctly.
        The switch successfully recognized complete module information including module type, vendor name, connector type, wavelength, and transmission distance.
        Digital Optical Monitoring (DOM) data could be read normally, with all values within the specified threshold range and no alarms present.
Table 2 Module Recognition & Status Information
Item
Information Read by Switch
LINK
 Identification
DOM Data
 

3. Key Parameter Performance Test
        a. Optical & Electrical Performance
        Performance testing of the SFP-XG-LX-SM1270-BIDI sample was conducted in a laboratory chamber at a constant temperature of 45°C.
        An H3C SFP-XG-LX-SM1330-BIDI module was used at the remote end.
Table 3 Measured Module Performance Parameters
Parameter
Test Data
Unit
Remarks
 Transmit Optical Power
-2.5
dBm
 
 Receiving Sensitivity (without fiber)
-16.0
dBm
0 BER
 Receive Sensitivity (with 10km fiber)
-15.8
dBm
0 BER
 Power Consumption
0.657
W
 

        b. Optical Eye Diagram Test
        Optical eye diagram testing was also performed at 45°C.
        The eye diagram template and measured parameters are shown below:
SFP-XG-LX-SM1270-BIDI optical module eye diagram template
Figure 2 Optical Module Eye Diagram Template
 
Table 4 Eye Diagram Parameters (at 45°C)
Temperature (℃)
Extinction Ratio (dB)
P-P Jitter (ps)
Rise Time (ps)
Fall time (ps)
Margin value (%)
45
5.98
17.5
24.08
39.90
19

        Based on actual test results, the key performance parameters and indicators of the module are consistent with H3C’s official specifications.
        Moduletek Limited is at your service.
        For further inquiries about the above content, please contact us at: sales@moduletek.com
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