Evaluation of dispersive Bragg gratings (BG) structures for the processing of RF signals with large time delays and bandwidths

M. Kaba; F. C. Zhou; A. Lim; D. Decoster; J.- P. Huignard; S. Tonda; D. Dolfi; J. Chazelas

doi:10.1117/12.745829

21 November 2007 Evaluation of dispersive Bragg gratings (BG) structures for the processing of RF signals with large time delays and bandwidths

M. Kaba, F. C. Zhou, A. Lim, D. Decoster, J.- P. Huignard, S. Tonda, D. Dolfi, J. Chazelas

Author Affiliations +

Proceedings Volume 6781, Passive Components and Fiber-based Devices IV; 67812Q (2007) https://doi.org/10.1117/12.745829
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

Abstract

The applications of microwave optoelectronics are extremely large since they extend from the Radio-over-Fibre to the Homeland security and defence systems. Then, the improved maturity of the optoelectronic components operating up to 40GHz permit to consider new optical processing functions (filtering, beamforming, ...) which can operate over very wideband microwave analogue signals. Specific performances are required which imply optical delay lines able to exhibit large Time-Bandwidth product values. It is proposed to evaluate slow light approach through highly dispersive structures based on either uniform or chirped Bragg Gratings. Therefore, we highlight the impact of the major parameters of such structures: index modulation depth, grating length, grating period, chirp coefficient and demonstrate the high potentiality of Bragg Grating for Large RF signals bandwidth processing under slow-light propagation.

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M. Kaba, F. C. Zhou, A. Lim, D. Decoster, J.- P. Huignard, S. Tonda, D. Dolfi, and J. Chazelas "Evaluation of dispersive Bragg gratings (BG) structures for the processing of RF signals with large time delays and bandwidths", Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67812Q (21 November 2007); https://doi.org/10.1117/12.745829

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