High resolution optical time-delay analyzer for large bandwidth microwave signals

Tonda-Goldstein, S.; Dolfi, Daniel; Formont, S.; Chazelas, J.

doi:10.1109/mwp.2004.1396827

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Continuously Tunable Wideband Delay Line Based on a Cumulative Grating Matrix

Hunter

Borg²

2005

2005 International Topical Meeting on Microwave Photonics

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A continuously tunable passive delay line based on a multichannel grating matrix is demonstrated. The wideband delay line is capable of providing continuous relative delays up to 60 ns with an accuracy of 100 ps. The topology is reconfigurable and expandable to provide arbitrary delay ranges and resolutions, and supports high speed tuning through the use of tunable semiconductor lasers. High cross-channel isolation and the ability to support multiple, simultaneous delays are also features of this simple, reliable topology. Index Terms-fiber Bragg gratings, microwave photonics, optical signal processing, optical fiber delay lines.

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