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<< JRScience Home     Volume 17 No.1   January  2006     << Back to Volume Home


S. J. Iqbal, M. Yousuf Hussain, A. M. S. Ramzia and H. B. Ahmad

Department of Electrical and Electronics Engineering, Faculty of Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. 


Abstract: Two-channel phase shift keying (PSK) optical communication using a single laser light source has been investigated with the help of Michelson Interferometer for encoding signals and homodyne technique was used for decoding signals. Light from the laser source was divided into three parts out of which two parts were used to carry two signals independently and the third part was used as a reference signal for decoding both signals. All of the three parts of light waves were originated from the same laser source but transmitted with different planes of polarization. In this system, on the receiving end, these three light-waves were recombined in sets of two signals with the reference signal that decodes the two light-wave signals independently. Keywords: Coherent length, free space communication, optical communication, polarization maintaining fiber, PSK communication.