SFP+ optical modules are widely used in 10G Ethernet due to their advantages of compact size, low cost and high density, and they are currently the most common 10G optical modules in data centers and enterprise campuses. The following is an inventory of all types of 10G SFP+ optical modules and the differences between them.
        The 10G SFP+ series optical modules include SR, LR, ER, ZR, BIDI, CWDM, DWDM and electrical port modules. All of them adopt LC duplex interfaces and comply with IEEE802.3ae, SFF-8472 and SFF-8431 standards. The detailed descriptions of the modules are as follows:
1. 10G SFP+ SR Optical Module
        The 10G SFP+ SR optical module operates at a wavelength of 850nm. When used with multimode fiber, it supports a maximum transmission distance of 300m, and features low cost, low power consumption, compact size and high density.
Figure 1: 10G SFP+ SR Optical Module
2. 10G SFP+ LR Optical Module
        The 10G SFP+ LR optical module operates at a wavelength of 1310nm. Its maximum transmission distance over single-mode fiber is 10km, and can actually reach up to 20km. Meanwhile, it has the advantages of miniaturization, low power consumption and long transmission distance.
3. 10G SFP+ ER Optical Module
        The 10G SFP+ ER optical module operates at a wavelength of 1550nm. When used with single-mode fiber, it supports a transmission distance of up to 40km. As a cost-effective ultra-long-distance optical module, it is currently widely used in data centers and enterprise campuses.
4. 10G SFP+ ZR Optical Module
        The 10G SFP+ ZR optical module operates at a wavelength of 1550nm. When used with single-mode fiber, it supports a transmission distance of up to 80km, and is widely applied in metropolitan area networks.
5. 10G SFP+ BIDI Optical Module
        BIDI optical modules are single-fiber bidirectional optical modules. They adopt WDM technology, which can reduce the fiber usage in network deployment, thereby greatly lowering the network deployment cost.
6. 10G SFP+ CWDM Optical Module
        The 10G SFP+ CWDM optical module is a coarse wavelength division multiplexing optical module, with a maximum transmission distance of up to 80km. It adopts CWDM technology to save fiber resources, which can significantly improve the flexibility, economy and reliability of networking.
7. 10G SFP+ DWDM Optical Module
        The 10G SFP+ DWDM optical module is a dense wavelength division multiplexing optical module, with a maximum transmission distance of up to 80km, suitable for long-distance data transmission. This type of optical module can meet the requirements of ultra-large capacity and ultra-long-distance transmission to the greatest extent, providing stable guarantee for multi-service operation and future network upgrade and expansion. It also supports multiple networking modes, and wavelength scheduling can be performed between various nodes. It has many advantages such as easy capacity expansion, flexible service access, high bandwidth utilization rate and high reliability.
8. 10G Electrical Port Module
        The 10G electrical port module is an electro-optical conversion module packaged in SFP+ form factor, with an RJ45 interface. It is usually used with Cat6A or Cat7 network patch cords, and currently supports a maximum transmission distance of 80m, which is widely used in data center computer rooms.
Figure 2: 10G Electrical Port Module
        Common Models of 10G Optical Modules
The common models of 10G optical modules are listed below. Please feel free to contact us if you have any needs.
Table 1: Common Models of 10G Optical Modules
Product Type
Package Type
Transmission Rate
Application
Wavelength
Transmission Medium
Transmission Distance
Interface Type
    SFP-10G-SR
SFP
10.5G
10GBase-SR
850nm Vcsel
SMF
300m
Dual LC
    SFP-10G-SR
SFP
10.5G
FET-10G
850nm Vcsel
SMF
300m
Dual LC
    SFP-10G-LRL
SFP
10.5G
10GBase-LR Lite
1310nm FP
SMF
2km
Dual LC
    SFP-10G-LR-10KM
SFP
10.5G
10GBase-LR
1310nm DFB
SMF
10km
Dual LC
    SFP-10G-LR-10KM-I
SFP
10.5G
10GBase-LR
1310nm DFB
SMF
10km
Dual LC
    SFP-10G-LR-20KM
SFP
10.5G
10GBase-LR
1310nm DFB
SMF
20km
Dual LC
    SFP-10G-LR40
SFP
10.5G
10GBase-LR4
1310nm DFB
SMF
40km
Dual LC
    SFP-10G-ER
SFP
11.3G
10GBase-ER
1550nm EML
SMF
40km
Dual LC
    SFP-10G-ER-I
SFP
11.3G
10GBase-ER
1550nm EML
SMF
40km
Dual LC
    SFP-10G-ER-CDR
SFP
11.3G
10GBase-ER
1550nm EML
SMF
40km
Dual LC
    SFP-10G-ZR
SFP
11.3G
10GBase-ZR
1550nm EML
SMF
80km
Dual LC
    SFP-10G-ZR-I
SFP
11.3G
10GBase-ZR
1550nm EML
SMF
80km
Dual LC
    SFP-10G-ZR-CDR
SFP
11.3G
10GBase-ZR
1550nm EML
SMF
80km
Dual LC
    SFP-10G-DWDM-ER-xx.xx
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
40km
Dual LC
    SFP-10G-DWDM-ER-xx.xx-I
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
40km
Dual LC
    SFP-10G-DWDM-ER-xx.xx-CDR
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
40km
Dual LC
    SFP-10G-DWDM-ZR-xx.xx
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
80km
Dual LC
    SFP-10G-DWDM-ZR-xx.xx-I
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
80km
Dual LC
    SFP-10G-DWDM-ZR-xx.xx-CDR
SFP
11.3G
10GBase-DWDM
DWDM C-Band 100GHz
SMF
80km
Dual LC
    SFP-10G-CWDM-ER-xxxx
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
40km
Dual LC
    SFP-10G-CWDM-ER-xxxx-I
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
40km
Dual LC
    SFP-10G-CWDM-ER-xxxx-CDR
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
40km
Dual LC
    SFP-10G-CWDM-ZR-xxxx
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
80km
Dual LC
    SFP-10G-CWDM-ZR-xxxx-I
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
80km
Dual LC
    SFP-10G-CWDM-ZR-xxxx-CDR
SFP
11.3G
10GBase-CWDM
1470nm~1610nm
SMF
80km
Dual LC
    SFP-10G-CWDM-DML-xxxx-10KM
SFP
11.3G
10GBase-CWDM
1270nm~1610nm
SMF
10km
Dual LC
    SFP-10G-CWDM-DML-xxxx-20KM
SFP
11.3G
10GBase-CWDM
1270nm~1450nm
SMF
20km
Dual LC
    SFP-10G-CWDM-DML-xxxx-40KM
SFP
11.3G
10GBase-CWDM
1270nm~1390nm
SMF
40km
Dual LC
    SFP-10G-BIDI-T1330R1270-10KM
SFP
10.5G
10GBase-BX
Tx1330nm/Rx1270nm
SMF
10km
Simplex LC
    SFP-10G-BIDI-T1270R1330-10KM
SFP
10.5G
10GBase-BX
Tx1270nm/Rx1330nm
SMF
10km
Simplex LC
    SFP-10G-BIDI-T1330R1270-10KM-I
SFP
10.5G
10GBase-BX
Tx1330nm/Rx1270nm
SMF
10km
Simplex LC
    SFP-10G-BIDI-T1270R1330-10KM-I
SFP
10.5G
10GBase-BX
Tx1270nm/Rx1330nm
SMF
10km
Simplex LC
    SFP-10G-BIDI-T1330R1270-20KM
SFP
10.5G
10GBase-BX
Tx1330nm/Rx1270nm
SMF
20km
Simplex LC
    SFP-10G-BIDI-T1270R1330-20KM
SFP
10.5G
10GBase-BX
Tx1270nm/Rx1330nm
SMF
20km
Simplex LC
    SFP-10G-BIDI-T1330R1270-20KM-I
SFP
10.5G
10GBase-BX
Tx1330nm/Rx1270nm
SMF
20km
Simplex LC
    SFP-10G-BIDI-T1270R1330-20KM-I
SFP
10.5G
10GBase-BX
Tx1270nm/Rx1330nm
SMF
20km
Simplex LC
    SFP-10G-BIDI-T1330R1270-40KM-PIN
SFP
10.5G
10GBase-BX
Tx1330nm/Rx1270nm
SMF
40km
Simplex LC
    SFP-10G-BIDI-T1270R1330-40KM-PIN
SFP
10.5G
10GBase-BX
Tx1270nm/Rx1330nm
SMF
40km
Simplex LC
    SFP-10G-BIDI-T1330R1270-60KM-APD
SFP
10.5G
10GBase-LR/LW
Tx1330nm/Rx1270nm
SMF
60km
Simplex LC
    SFP-10G-BIDI-T1270R1330-60KM-APD
SFP
10.5G
10GBase-LR/LW
Tx1270nm/Rx1330nm
SMF
60km
Simplex LC
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