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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 20 — Oct. 15, 2011
  • pp: 3025–3034

IR-UWB-Over-Fiber Systems Compatible With WDM-PON Networks

Shilong Pan and Jianping Yao

Journal of Lightwave Technology, Vol. 29, Issue 20, pp. 3025-3034 (2011)


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Abstract

Integrating an ultrawideband-over-fiber (UWBoF) system into a wavelength division multiplexing passive optical network (WDM-PON) is of great interest due to the high potential to provide high data-rate and flexible wired and wireless services with a favorable cost. In this paper, we perform a comprehensive study on an impulse radio UWBoF system compatible with the WDM-PON architecture implemented based on a photonic microwave bandpass filter. The bandpass filter is a two-tap delay-line filter implemented using either a polarization modulator (PolM) or a phase modulator (PM), which is used to simultaneously shape an electrical Gaussian-like pulse to an optical UWB pulse and reduce the out-band noise and interference. The features of the photonic microwave bandpass filters are theoretically studied. The photonic microwave bandpass filter based on a PolM would produce a chirp-free UWB signal, while the one based on a PM would generate a UWB signal that is insensitive to fiber dispersion. A single-channel UWBoF system with ON–OFF keying, biphase modulation, and pulse-position modulation without and with time hopping are experimentally studied. The experimental results agree well with the theoretical predictions. A four-channel UWBoF broadcasting network as well as a hybrid WDM-PON network to provide both wireless and wired services is also experimentally investigated. Results show that a conventional WDM-PON network could be easily upgraded to provide UWB services by incorporating the proposed photonic microwave bandpass filter.

© 2011 IEEE

Citation
Shilong Pan and Jianping Yao, "IR-UWB-Over-Fiber Systems Compatible With WDM-PON Networks," J. Lightwave Technol. 29, 3025-3034 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-20-3025

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