公开(公告)号：US20030068124A1

公开(公告)日：2003-04-10

申请号：US10197930

申请日：2002-07-16

Applicant: General Atomics

Inventor： Ian Michael Barton ,  Steve Mathew Herman

IPC: G02B006/293 ,  G02B006/34

CPC classification number: G02B6/2931 ,  G02B6/2938

Abstract: Systems are described that disperse the wavelength bands corresponding to the channel centers at a faster rate than the bandwidth of the channels themselves. An embodiment consists of a double element system including a grating, to create the initial separation, and a segmented mirror with multiple flat facets of different tilt, which reflect each spatially separated channel at a different angle. The size, position and angle of the facets are designed to match the spacing and position of individual channels of known wavelength and number that are diffracting from a grating with a predefined period, a set distance from this device. This system enables the individual channels to be re-imaged at some later point with a large separation between the channels, relative to their spatial size.

Abstract translation: 描述了以与信道本身的带宽更快的速率分散对应于信道中心的波长带的系统。 一个实施例由包括光栅的双元件系统组成，以产生初始分离，以及具有不同倾斜的多个平坦面的分段镜，其以不同的角度反射每个空间上分离的通道。 小平面的尺寸，位置和角度被设计成匹配从具有预定周期的光栅衍射的已知波长和数量的各个通道的间隔和位置，与该装置的设定距离。 该系统使得各个通道可以在稍后的点被重新成像，相对于它们的空间尺寸，通道之间的间隔很大。

公开(公告)号：US20030067687A1

公开(公告)日：2003-04-10

申请号：US10247024

申请日：2002-09-19

Applicant: General Atomics

Inventor： Ian Michael Barton ,  Steve Mathew Herman

IPC: G02B005/18

CPC classification number: G02B5/1857 ,  G02B5/1861

Abstract: A diffraction grating includes a metallic base layer and layers of dielectric materials of varying refractive index, where a bottom interface of the layers is adherent to the metallic base layer. The dielectric layers are periodically spaced on top of the metallic base layer, leaving the metallic base layer exposed in regions. This grating allows for the polarization insensitive reflective properties of the base metallic layer to operate in conjunction with the polarization sensitive diffraction properties of the multilayer grating structure to provide near 100% diffraction efficiency over a reasonable wavelength bandwidth, independent of the polarization of the incident beam.

Abstract translation: 衍射光栅包括金属基底层和具有不同折射率的介电材料层，其中这些层的底部界面附着在金属基底层上。 电介质层周期性地间隔在金属基底层的顶部，使得金属基底层暴露在区域中。 该光栅允许基底金属层的偏振不敏感反射特性与多层光栅结构的偏振敏感衍射特性一起工作，以在合理的波长带宽上提供接近100％的衍射效率，而与入射光束的极化无关 。