Introduction to Laser Torch-Based Voice Transmitter and Receiver Project:

Right from the origin communication system had undergone several changes in terms of its advancement, continuous modernization taking place in every aspect of global communication. This electronic media starting from satellite communications had invented new dimensions in the field of wireless communication, research in these areas created a new concept of communication by means of lasers, no one ever expected this kind of development in communication strategies and its always a raising question that how we communicate by implementing lasers, in our project we give a detailed answer about how we communicate with others by using laser technology.

The main operation of our project is based on the two sections one is laser transmitter section and the other laser receiver section the combination of these two sections constitutes the entire circuit block.

The proposed circuit basically had the transmitter circuit and this block consists of transistor amplifier BC548 coupled with condenser microphone, and an audio modulator (BD139). The audio signal which is to be transmitted is feed along with the laser beam and transmitted in air by laser torch, the photo transistor located  in the receiver circuit  takes the information  and converts into audio signal, this audio signal is feed to the amplifier circuit which modifies the given signal and transmits to the listeners speaker,

 Here we use LM358   (Low Power Dual Operational Amplifier) gives low noise amplification, high input impedance, high current driving capability. And the total components with their specifications are elaborately explained in this paper. The overall advantages of our laser based voice transmitter and receiver is to provide speed and accuracy with high data rates, minimal interruptions and highly flexible. The performance characteristics and the practical results verified with real time applications.

The future scope for the laser based communication is to achieve the two way laser communication in spatial communications.

Download  Project Report on Laser Torch-Based Voice Transmitter and Receiver.