What is Line Communication?
admin In line communication there is a physical connection between source and destination. The wired connections between two points are known as transmission lines. The wires that are most popular for…
Physics
Explain the equivalent circuit of a transmission line?
We know that the conductors are present in a two wire line. Dielectrics are also present between them. It is also clear that conductors can be of any length. Conductors…
What is Cable System?
Cable system is basically a collection of no of co-axial lines enclosed together in a tube or pipe. This cable system also consists of other useful things, along with the…
What are Telephone Links?
In today’s fast world, telephone is a necessity. Telephony is not limited to earth. We can also converse from earth to any other planet e.g. moon, mars etc. It depends…
What is Optical Communication?
It is a system in which we use the optical range of frequencies to send or receive the information to distant place from one point to another. During the last…
Explain the different types of LASERS?
There are basically four types of lasers 1. Gas lasers 2. Solid lasers 3. Liquid lasers 4. Semi Conductor lasers Gas lasers:- These lasers contain a mixture of helium and…
What are the main components of LASERS?
The lasers mainly consist of three major components. These are Active medium, Pump, and resonator guide. First we will discuss active medium. It can be in molecular or in atomic…
Explain the various characteristics of LASER?
Various characteristics of LASER are: 1. Pumping source is present in all lasers which provide energy. 2. Active material is also used in all lasers. Its main purpose is to…
Explain various applications of LASER?
Various applications of LASERS are :- 1. Communication: – long distance telephone calls can be made using laser beams. 2. Surgery: – Retinal operations are carried out with the help…
What is Modulation of Light?
If we want to send or receive information through optical fiber cables then we have to attach some light signals with the information. This can be achieved either by digital…