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Optical Transceiver
Optical Transceivers Introduction
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Is it possible to interconnect SFP, SFP+, XFP, X2 and XENPAK?

  • November 08. 2017
There are many kinds of 10G optical transceivers on the market such as SFP+, XFP, X2 and XENPAK. If we can interconnect SFP+, XFP, X2 and XENPAK? Some module users want to know if they can connect SFP to SFP+ or if they can connect single-mode modules to multi-mode modules. In this blog, we will list some common questions often asked by module users and give the right answer mainly based on Cisco optical transceivers.

1. Can we interconnect SFP-10G-SR to XENPAK-10GB-SR or X2-10GB-SR?
The answer is yes. If your modules are singlemode you need singlemode patch cord. If your modules are multi-mode then you need multi-mode patch cord. SFP-10G-SR, XENPAK-10GB-SR and X2-10GB-SR are all multi-mode modules, so use multi-mode fiber can solve this problem.


2. Can LC-SC patch cord connect X2-10GB-SR between SFP-10G-SR?
Yes, it’ll work fine as long as you use multi-mode LC-SC patch cord. Actually, the SFP+ requires LC connector but the X2 needs SC connector. When connect SFP-10G-SR to X2-10GB-SR, we must use LC-SC MM patch cable.


3. Is it possible to connect X2-10GB-LR to SFP-10G-SR?
The answer is no. The X2-10GB-LR module supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652). However, the SFP-10G-SR module supports a link length of 300m on OM3 multi-mode fiber (MMF,OM3). You need to use modules with the same wavelengths, like SR to SR or LR to LR.


4. Can we connect SFP-10G-SR to GLC-SX-MM?
This question means can we force SFP-10G-SR to use 1Gbps speed? This is a very common question and the answer is NO. Because the SFP-10G-SR is 10Gbps. It runs at 10Gbps link rate and no other speed. GBIC, SFP, X2, QSFP, CFP modules will only negotiate to one speed and one speed only. You cannot interconnect them.


ETU-Link provides a variety of optical transceivers at very reasonable prices which can satisfy your requirements from 1G to 100G Ethernet. For more information, please contact us over sales@etulinktechnology.com.

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