发明名称 |
COUPLING-ENHANCED DEVICE HAVING SURFACE ETCHED GRATING AND EFFECTIVE SIDE RIDGES |
摘要 |
<p>The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has a sequence of the periodic parallel segmented trenches etched from its top surface, such that the segments of intact material having higher refractive index than that in the surrounding segments of periodic trenches form the effective ridges which confine the optical field in and around these ridges, on one hand, and provide bidirectional coupling for the confined modes experiencing Bragg reflection from the segments of the periodic trenches, on the other. The invention discloses the designs of the multiple effective ridge laterally coupled surface-etched grating waveguide structures, which enhances the coupling efficiency as compared to a conventional single effective ridge grating design because of an intended dilution of the lateral confinement caused by the multiple effective ridges, resulting in an increase of the optical mode's overlap with the surface etched grating formed everywhere outside the effective ridges.</p> |
申请公布号 |
WO2008031197(A1) |
申请公布日期 |
2008.03.20 |
申请号 |
WO2007CA01573 |
申请日期 |
2007.09.12 |
申请人 |
ONECHIP PHOTONICS INC.;TOLSTIKHIN, VALERY, I.;PIMENOV, KIRILL |
发明人 |
TOLSTIKHIN, VALERY, I.;PIMENOV, KIRILL |
分类号 |
G02B6/12;G02B5/18;G02B5/26;G02B6/136;G02B6/24 |
主分类号 |
G02B6/12 |
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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