data transmission through laser with pass word circuit diagram

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Dear sir/madam
We are the student of Lovely Professional University,Phagwara, Punjab , India

This is our last semester of B.Tech. and wehave to do capstone project.which is "LASER based data transmitter and receiver".
We wants circuit diagram of laser based data transmitter and receiver using LASER light source and Microcontroller. The data at transmitter will be displayed on LCD at transmitter section . Then at receiver section using phototransister we will receive the digital data and that will be again displayed on LCD.
please also provide the microcontroller code for the same circuit.
our Email-id is "P10901568[at]gmail.com"
we will be grateful to you.
thank you