首页>
外国专利>
Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution
Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution
展开▼
机译:弯曲光栅光谱仪和具有非常高的波长分辨率的波长复用器或解复用器
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (COGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. The location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions. The first one being that the path-difference between adjacent grooves should be an integral multiple of the wavelength in the medium to achieve aberration-free grating focusing at the detector or a first anchor output slit even with large beam diffraction angle from the entrance slit or input slit, the second one being specific for a particular design goal of a curved-grating spectrometer.
展开▼