Title:
MULTI-BAND ACOUSTO-OPTIC TUNED FILTER
Document Type and Number:
WIPO Patent Application WO/2023/077834
Kind Code:
A1
Abstract:
Disclosed is a multi-band acousto-optic tuned filter. The acousto-optic filter consists of an acousto-optic waveguide and an optical mode beam splitter. In the acousto-optic waveguide part, a reconfigurable multimode waveguide grating is formed by means of exciting one or more acoustic modes, causing an input optical mode to be converted into another optical mode in a same direction or in a reverse direction in a phase-matched wave band; the two optical modes are then separated by the optical mode beam splitter, thereby achieving band-pass or band-stop filtering. The method has advantages such as low power consumption, high tuning speed, and an ultra-large tuning range. A synthesized time-varying waveguide grating can be formed by means of exciting propagation of multiple sound waves having different frequencies, thereby achieving independent switching of multiple common-path wave bands and filtering spectral type modulation.
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Inventors:
LI HUAN (CN)
PAN BINGCHENG (CN)
DAI DAOXIN (CN)
PAN BINGCHENG (CN)
DAI DAOXIN (CN)
Application Number:
PCT/CN2022/102089
Publication Date:
May 11, 2023
Filing Date:
June 28, 2022
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
G02F1/125; G02F1/11
Foreign References:
| CN114035351A | 2022-02-11 | |||
| EP0938017A1 | 1999-08-25 | |||
| US20030035200A1 | 2003-02-20 | |||
| CN102004333A | 2011-04-06 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD (CN)
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