Title :
Two-branch double-stage phase-diversity (DSPD) coherent receiver using a 3/spl times/3 fiber coupler
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
We propose a novel two-branch double-stage phase-diversity receiver. It uses a 3/spl times/3 fiber coupler as a 120/spl deg/ optical hybrid, and features a fiber-type optical circuit and a simple electrical circuit. Experimental confirmation of the principle and demonstration of suppression of the image-band beat noise from fiber amplifiers are shown.<>
Keywords :
fibre lasers; optical fibre couplers; optical noise; optical receivers; 120/spl deg/ optical hybrid; 3/spl times/3 fiber coupler; electrical circuit; fiber amplifiers; fiber-type optical circuit; image-band beat noise; two-branch double-stage phase-diversity coherent receiver; Coupling circuits; Frequency; Local oscillators; Optical fiber communication; Optical fiber couplers; Optical mixing; Optical noise; Optical receivers; Optical sensors; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
