Abstract: A four-port grating coupler with etched square holes is proposed and demonstrated for surface-normal and polarization independent coupling. Benefiting from the perfectly vertical coupling ...

Abstract: We describe a shallow-etched diffractive waveguide grating coupler which achieves efficient coupling between single-mode fiber and a silicon-on-insulator optical waveguide. By the ...

This is a more advanced, but more flexible version of the original program. It changes the spectrometer from educational 'toy' to serious instrument, which can easily compete with commercial units ...

Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Oxonica Materials Incorporated, 325 East Middlefield Road, Mountain View, California 94043 Article ...

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.

美国PI公司推出的Fergie全焦面零像差成像光谱仪，集成了高灵敏度科学级CCD芯片，设计紧凑，简化光谱实验硬件设置。后续升级为IsoPlane 81光谱仪，采用无像差光学设计，提高光谱分辨率和信噪比，支持多种光谱测量模式，具备低温冷却和高速数据采集能力，适用 ...