卫星通信与光通信的区别

卫星通讯：
在卫星通信中，地球同步通信卫星用于通信目的。卫星在太空中充当中继站，通过它可以与世界上任何地方进行通信。它从一个地球站接收信号，将其放大，提高信号质量并传回接收地球站。太阳能电池板主要用于卫星，以完成电力需求。

光通信：
由于数据速率非常高，光通信被广泛用于网络主干。在光通信中，光纤用于通信目的。从发送方到接收方的信号通过光线传输。信号不受光通信中电或电磁干扰的影响。它不需要放大器，因为光纤中的传输损耗很低。

卫星通信与光通信的区别如下：

S.No.	Satellite Communication	Optical Communication
1.	Satellite communication uses electromagnetic waves as a medium for propagation.	Optical communication uses the light rays as a medium of propagation.
	In satellite communication, satellites as a relay station are used for communication.	In optical communication, communication happens via optical fiber.
3.	In satellite communication, for transmission and reception of signals special type of antennas are needed.	In optical communication, no special antennas are needed for communication.
4.	Air is the transmission medium in satellite communication.	While in optical communication, fiber is the transmission medium.
5.	Each transponder in satellite communication supports a bandwidth of 36 MHz and hold 12 channels simultaneously.	Optical fiber supports a bandwidth of very large range and one cable combines many fibers.
6.	Satellite communication is convenient and effective for very long distance communication.	For point to point short distance communication, optical communication is appropriate and effective.
7.	Cost of installation is very expensive.	Cost of installation is very less as compared to satellite communication.