Periodic bandpass filter with near-ideal filter response based on Sagnac loop interferometer
✍ Scribed by Li Wei; Qinghe Mao; John W. Y. Lit
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 111 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
In this paper, an analytical analysis is made on a periodic bandpass filter formed by a two‐cavity etalon incorporated into a Sagnac loop interferometer. The general optimum conditions for a quasi‐flat‐top spectrum and a ripple‐free group‐delay response are derived. Our results show that by properly choosing the reflectance of the mirrors, the filter can be designed with a quasi‐flat‐top spectral response that is also free from group‐delay ripples. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 17–21, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20194