Media Converter
Transceiver
Bi-Directional
100

OSL Layer 1

Physical layer singal coversion

100

transmitter and receiver

usually in a single component 

100

traffic in both directions with single fiber

use two different wavelengths

200

Extend a copper wire over a long distance

convert it to fiber, and back again

200

provides a modular interface

add the transceiver that matches your network

200
quad small form-factor pluggable

4 channel SFP=four 1 Gbit/s=4Gbits

QSFP+ is four channel SFP+=Four 10 Gbit/sec=40

300

You have fiber

The switch only has a copper ports

300

Many different types 

and designs 

300

quad small form-factor pluggable

4-channel sfp=four 1 Gbit/s 

QSFP+ is four channel SFP+ four 10 gbit/sec=  40 Gbit/sec

400

Almost always powered

Especially fiber to copper

400

small form-factor pluggable

commonly used to provide 1 gbit/fiber

400

combine four SFPS into a single transceiver 

cost saving in fiber and equipment

500

two fiber

transmit and receive

500

enhanced small 

exactly the same physical size as SFPs

support data rates up to 16 Gbit

common with 10 Gigabit ethernet 

500

Bi-Directional (BiDi) QSFP and QSFP+

additional efficiency over a single fiber run