Title :
Proposal and performance analysis of novel optical homodyne receiver having an optical preamplifier for achieving the receiver sensitivity beyond the shot-noise limit
Author_Institution :
Dept. of Electron. Eng., Tokyo Univ., Japan
Abstract :
A novel optical homodyne receiver for binary PSK optical communication systems that can break the receiver sensitivity limit determined from the shot noise is proposed. The receiver consists of the optical preamplifier, the feedforward circuit to reduce the signal-spontaneous beat noise, and the conventional double-balanced homodyne receiver. The operation principle of the receiver and the analysis of the sensitivity are described.<>
Keywords :
optical communication equipment; phase shift keying; preamplifiers; random noise; receivers; binary PSK optical communication systems; double-balanced homodyne receiver; feedforward circuit; optical homodyne receiver; optical preamplifier; receiver sensitivity; shot-noise limit; signal-spontaneous beat noise; Circuit noise; Noise reduction; Optical fiber communication; Optical noise; Optical receivers; Optical sensors; Performance analysis; Phase shift keying; Preamplifiers; Proposals;
Journal_Title :
Photonics Technology Letters, IEEE
