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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12167–12173

Simultaneous noise and distortion reduction of a broadband optical feedforward transmitter for multi-service operation in radio-over-fiber systems

Yon-Tae Moon, Jun Woo Jang, Woon-Kyung Choi, and Young-Wan Choi  »View Author Affiliations


Optics Express, Vol. 15, Issue 19, pp. 12167-12173 (2007)
http://dx.doi.org/10.1364/OE.15.012167


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Abstract

The broadband optical feedforward transmitter with uncooled and unisolated distributed-feedback laser diodes (DFB LDs) is developed for a radio-over-fiber system. Although we use DFB LDs for digital communications, the feedforward compensation method can significantly suppress the intermodulation distortions and background noise. For the wide frequency range from 2.05 to 2.60 GHz (550 MHz), the third-order intermodulation distortion (IMD3) is suppressed by more than 10 dB. We also analyze the variation of IMD3 and noise for the bias current of LDs. With the linearization technique, the maximum IMD3 suppression and spurious-free dynamic range enhancement are 21.3 dB and 7.11 dB, respectively, at 2.3 GHz.

© 2007 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(130.0250) Integrated optics : Optoelectronics
(140.3490) Lasers and laser optics : Lasers, distributed-feedback

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 9, 2007
Revised Manuscript: September 3, 2007
Manuscript Accepted: September 3, 2007
Published: September 10, 2007

Citation
Yon-Tae Moon, Jun Woo Jang, Woon-Kyung Choi, and Young-Wan Choi, "Simultaneous noise and distortion reduction of a broadband optical feedforward transmitter for multi-service operation in radio-over-fiber systems," Opt. Express 15, 12167-12173 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-19-12167


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References

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