Performance of single- and double-ring resonators using 3×3 optical-fiber coupler

Author

Chew, Y.H. ; Tjhung, T.T. ; Mendis, F.V.C.

Author_Institution

Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

Volume

11

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1998

Lastpage

2008

Abstract

This paper investigates theoretically the transmission characteristics of single- and double-ring resonators using 3×3 optical-fiber couplers. Two configurations of a 3×3 coupler are considered: configuration A, with the three fibers centered at the vertices of an equilateral triangle, and configuration B, with their centers aligned in a straight line. It is found that a ring resonator using configuration A does not show any performance improvement over ring resonators using 2×2 couplers. On the other hand, a single-ring resonator using configuration B has a performance close to resonators using 2×2 couplers. It is also shown that a double-ring resonator using a 3×3 coupler exhibits resonance with a double peak, which may find application in the filtering of coherent frequency-shift keying (FSK) signals after optical amplification in an optical-fiber line repeater

Keywords

frequency shift keying; optical communication equipment; optical couplers; optical fibres; optical modulation; optical resonators; 2×2 couplers; 3×3 optical-fiber coupler; FSK; coherent frequency-shift keying; double peak; double-ring resonators; equilateral triangle; optical amplification; optical-fiber line repeater; ring resonator; single-ring resonators; straight line; transmission characteristics; Filtering; Frequency shift keying; Optical fiber couplers; Optical filters; Optical resonators; Optical ring resonators; Repeaters; Resonance; Resonator filters; Stimulated emission;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.257962

Filename

257962