Waveguide tunable Bragg grating using compliant microelectromechanical system (MEMS) technology
US6529659B2 · kind B2 · utility
5Cited by
4References
5Claims
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Key dates
| Filing date | Apr 11, 2001 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12069
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A low cost waveguide tunable Bragg grating provides a flat passband and minimal crosstalk. A compliant material forms a waveguide that is imprinted with a Bragg grating and mounted on a MEMS actuator. Entropic materials such as elastomers, aerogels or other long-chain polymers may provide the necessary compliance. The application of a drive signal to the actuator deforms (squeezes or stretches) the compliant material thereby changing the Bragg spacing and shifting the resonant wavelength. The MEMS actuator can be an electrostatically or electromagnetically actuated comb-drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.