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Published on: November 30, 2012
Optically fed microwave true-time delay based on a compact liquid-crystal photonic-bandgap-fiber device
Lei Wei1, Weiqi Xue, Yaohui Chen
1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark. lewe@fotonik.dtu.dk
Optics Letters
|September 17, 2009
Abstract:
An electrically tunable liquid-crystal, photonic-bandgap-fiber-device-based, optically fed microwave, true-time delay is demonstrated with the response time in the millisecond range. A maximum electrically controlled phase shift of around 70 degrees at 15 GHz and an averaged 12.9 ps true-time delay over the entire modulation frequency range of 1-15 GHz are obtained.
