| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1542606 | Optics Communications | 2006 | 4 Pages |
Abstract
A novel second-order polarization-independent filter made of a single ring resonator and a Sagnac interferometer (SRRSI) is proposed, and its filtering characteristics are investigated. By using birefringence in waveguide, a single ring resonator can be used to synthesize a filter with second-order response. Analytical formulas are derived for characteristics of the SRRSI varied with waveguide parameters, such as the coupling coefficient; and the critical condition of a second-order Butterworth filter is given. The influence of loss in the ring resonator is also analyzed.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Fufei Pang, Feng Liu, Xiuyou Han, Haiwen Cai, Ronghui Qu, Zujie Fang,