Optical wavelength filtering by diffraction from a surface relief

被引:13
作者
Belikov, R [1 ]
Solgaard, O [1 ]
机构
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
关键词
D O I
10.1364/OL.28.000447
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present an analytical solution to the problem of finding. a diffractive surface relief that generates a specific optical amplitude and phase spectral reflection in a particular direction. We show that any discrete finite impulse response filter can be generated to within a multiplicative constant at nonzero frequencies. We propose an implementation of such a filter that works in the visible and the near infrared, based on a two-dimensional array of dual-state tiltable mirrors. A 1024 X 1024 array results in a 1024-tap filter with 10-bit quantization of the impulse response. The applications of such a device include spectroscopy and wavelength-division multiplex switching. (C) 2003 Optical Society of America.
引用
收藏
页码:447 / 449
页数:3
相关论文
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