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Temperature Insensitive and Low Cost Transversal Filters Based on Uniform Fibre Bragg Gratings
Jose MORA Beatriz ORTEGA Miguel V. ANDRES Jose CAPMANY Jose Luis CRUZ Daniel PASTOR Salvador SALES
IEICE TRANSACTIONS on Electronics
Publication Date: 2003/07/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress in Microwave and Millimeter-wave Photonics Technologies)
Category: Signal Generation and Processing Based on MWP Techniques
Bragg gratings, tapered fiber, transversal filters,
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In this paper, we propose a new configuration to implement transversal filters with negligible temperature sensitivity and low cost. These microwave filters are based on uniform fibre Bragg gratings as slicing elements of a broadband optical source. By using a tapered fibre Bragg grating as a delay line, we show that the temperature effects are the same over each component of the RF-filter. Therefore, it is possible a total cancellation of the thermal effects. The performance of these filters is compared to previous techniques, such as a laser array approach.