发明名称 |
THREE-DIMENSIONAL DIFFRACTIVE STRUCTURE, METHOD FOR MAKING, AND APPLICATIONS THEREOF |
摘要 |
Three-dimensional grating device includes two (crossed) diffraction gratings, exhibits diffraction efficiency substantially independent of the incident polarization inside an optical communication spectral window from 1.5 - 1.6 µm. The gratings are characterized by different periods in two directions, chosen to support only one dispersive diffraction order in addition to the zero- (specular) order. Gratings may be orthogonal. Exemplary grating profiles include but are not limited to sinusoidal and truncated pyramidal (trapezoidal) profiles. A method for diffracting polarization independent light with 90% or higher efficiency. Applications include various wavelength control devices particularly useful in telecommunications. |
申请公布号 |
WO2009143320(A2) |
申请公布日期 |
2009.11.26 |
申请号 |
WO2009US44790 |
申请日期 |
2009.05.21 |
申请人 |
LUMELLA, INC.;HOOSE, JOHN |
发明人 |
HOOSE, JOHN |
分类号 |
G02B5/18;G02B6/293 |
主分类号 |
G02B5/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|