发明名称 |
Planar-waveguide Bragg gratings in curved waveguides |
摘要 |
A method for forming planar-waveguide Bragg grating in a curved waveguide comprises: forming a long chirped planar-waveguide Bragg grating in an Archimedes' spiral such that a long length of the waveguide can fit in a small chip area where the grating is formed in the curved waveguide; using periodic width modulation to form the planar-waveguide Bragg grating on the curved waveguide, and where the formation of the periodic width modulation occurs during the etching of the waveguide core; using rectangular width modulation to create Bragg gratings with a higher order than 1st order to allow a larger grating period and larger modulation depth, using waveguide width tapering while keeping the width modulation period constant to introduce chirp to the planar-waveguide Bragg grating where the index of refraction is a function of waveguide width, by applying a specific width tapering to create a desired arbitrary chirp profile. |
申请公布号 |
US8731350(B1) |
申请公布日期 |
2014.05.20 |
申请号 |
US201213609294 |
申请日期 |
2012.09.11 |
申请人 |
LIN CHUNYAN;JACOBS EVERETT W.;ADLEMAN JAMES R.;RODGERS JOHN SCOTT;THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
LIN CHUNYAN;JACOBS EVERETT W.;ADLEMAN JAMES R.;RODGERS JOHN SCOTT |
分类号 |
G02B6/34;G02B6/10;G02F1/295 |
主分类号 |
G02B6/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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