Impact of the phase noise generated from semiconductor optical amplifiers on the size of optical space switches

Author

Pires, Joäo J O

Author_Institution

Dept. of Electr. & Comput. Eng., Inst. Superior Tecnico, Lisbon, Portugal

Volume

3

fYear

1995

fDate

14-16 Nov 1995

Firstpage

2108

Abstract

Optical space switch matrices can be designed by interconnecting properly multiple 2×2 switches based on semiconductor optical amplifiers (SOAs). The size of these switching structures is limited by many phenomena, including phase noise generated by SOAs, which can be a serious drawback if coherent modulation schemes are used in the network. This paper examines this problem, for a DPSK direct detection system. It is found that there is an optimum level for the switch input power, and the phase noise limits the number of 2×2 switches, which can be cascaded, to about 200, for a bit rate in the gigabit/s range

Keywords

differential phase shift keying; laser noise; optical modulation; optical signal detection; phase noise; photonic switching systems; semiconductor lasers; DPSK direct detection system; bit rate; coherent modulation; optical space switch matrices; phase noise generation; semiconductor optical amplifiers; switch input power; switching structures; Differential quadrature phase shift keying; Optical design; Optical interconnections; Optical modulation; Optical noise; Optical switches; Phase modulation; Phase noise; Semiconductor optical amplifiers; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE

Print_ISBN

0-7803-2509-5

Type

conf

DOI

10.1109/GLOCOM.1995.502776

Filename

502776