Arbitrary on-chip optical filter using complex waveguide Bragg gratings
| Autor: | Sylvain Veilleux, Yiwen Hu, Joss Bland-Hawthorn, Pradip Gatkine, Tiecheng Zhu, Mario Dagenais |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Fabrication
Materials science Physics and Astronomy (miscellaneous) business.industry Physics::Optics 02 engineering and technology Grating 01 natural sciences law.invention 010309 optics 020210 optoelectronics & photonics Optics Fiber Bragg grating Transmission (telecommunications) law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Optoelectronics System on a chip Emission spectrum Optical filter business Waveguide |
| Zdroj: | Applied Physics Letters. 108:101104 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.4943551 |
| Popis: | We demonstrate a Complex Waveguide Bragg Grating (CWBG) which can be designed to generate an arbitrary transmission spectrum. A comprehensive design method, based on the Layer Peeling/Adding algorithm, is developed to realize the grating on a silica-on-silicon platform. The CWBG has a simple one-layer waveguide structure for ease of fabrication. A spectral precision better than ±0.1 nm and a suppression ratio between 15 dB and 33 dB are achieved for a transmission spectrum consisting of 20 randomly distributed spectral notches with a 3 dB width of 0.3–0.4 nm. Among the CWBG's various potential applications, we highlight its use for eliminating OH emission lines from the Earth's atmosphere for ground-based astronomical observations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|