Radio-over-fiber AM-to-FM upconversion using an optically injected semiconductor laser

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2254-2256
Journal / PublicationOptics Letters
Volume31
Issue number15
Publication statusPublished - 1 Aug 2006
Externally publishedYes

Abstract

A radio-over-fiber system uses light to carry a microwave subcarrier on optical fibers. The microwave is usually frequency modulated for wireless broadcasting. A conventional optical communication system usually operates at the baseband with amplitude modulation. The interface of the two systems thus needs an up-conversion from the baseband to the microwave band with AM-to-FM transformation. An all-optical solution employing an optically injected semiconductor laser is investigated. The laser is operated in a dynamic state, where its intensity oscillates at a microwave frequency that varies with the injection strength. When the injection carries AM data, the microwave is frequency modulated accordingly. We demonstrate optical conversion from an OC-12 622-Mbps AM baseband signal to the corresponding FM microwave signal. The microwave is centered at 15.90 GHz. A bit-error rate of less than 10-9 is measured. © 2006 Optical Society of America.

Citation Format(s)

Radio-over-fiber AM-to-FM upconversion using an optically injected semiconductor laser. / Chan, Sze-Chun; Hwang, Sheng-Kwang; Liu, Jia-Ming.
In: Optics Letters, Vol. 31, No. 15, 01.08.2006, p. 2254-2256.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review