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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 18516–18522

RoF transport systems with OSNR enhanced multi-band optical carrier generator

Heng-Sheng Su, Chung-Yi Li, Hai-Han Lu, Ching-Hung Chang, Peng-Chun Peng, Po-Yi Wu, and Hwan-Wen Chen  »View Author Affiliations


Optics Express, Vol. 19, Issue 19, pp. 18516-18522 (2011)
http://dx.doi.org/10.1364/OE.19.018516


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Abstract

A combination of an economic multi-band optical carrier generator and a novel optical signal to noise ratio (OSNR) enhancement circuit is proposed and demonstrated for radio over fiber (RoF) transport systems. Different from normal RoF transport systems which a central station (CS) needs multiple dedicate wavelength laser diodes (LDs) to support various base stations (BSs), the proposed scheme can employ a single LD to provide multiple optical carriers for various BSs. To verify this scheme, 8 coherent optical carriers are firstly generated using a single LD and a local oscillator (LO). Subsequently, their OSNR values are optimized by the developed OSNR enhancement circuit. An up to 15 dB OSNR enlargement in those optical carriers is experimentally achieved. To demonstrate the practice of the proposal, a pair of those optical carriers is employed to experimentally achieve frequency up-conversion process in a RoF transport system. Clear eye diagram and error free transmission reveal that with a proper carrier selector the proposed scheme can be employed to support multiple RoF transmissions. Furthermore, this proposal also presents a high possibility to achieve 60 GHz RoF transmission using a 10 GHz LO, a LD and a low frequency external modulator.

© 2011 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(350.4010) Other areas of optics : Microwaves

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 5, 2011
Revised Manuscript: August 23, 2011
Manuscript Accepted: August 23, 2011
Published: September 7, 2011

Citation
Heng-Sheng Su, Chung-Yi Li, Hai-Han Lu, Ching-Hung Chang, Peng-Chun Peng, Po-Yi Wu, and Hwan-Wen Chen, "RoF transport systems with OSNR enhanced multi-band optical carrier generator," Opt. Express 19, 18516-18522 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-19-18516


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