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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 15 — Aug. 1, 2006
  • pp: 2254–2256

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

Sze-Chun Chan, Sheng-Kwang Hwang, and Jia-Ming Liu  »View Author Affiliations

Optics Letters, Vol. 31, Issue 15, pp. 2254-2256 (2006)

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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 upconversion 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

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.5960) Lasers and laser optics : Semiconductor lasers
(350.4010) Other areas of optics : Microwaves

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 13, 2006
Revised Manuscript: April 24, 2006
Manuscript Accepted: May 8, 2006
Published: July 10, 2006

Sze-Chun Chan, Sheng-Kwang Hwang, and Jia-Ming Liu, "Radio-over-fiber AM-to-FM upconversion using an optically injected semiconductor laser," Opt. Lett. 31, 2254-2256 (2006)

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