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Patent Searching and Data


Title:
WAVELENGTH SELECTIVE DETECTOR
Document Type and Number:
WIPO Patent Application WO2003103060
Kind Code:
A3
Abstract:
A wavelength selective detector having a first absorbing layer for absorbing light with a wavelength below a lower band cutoff, a second absorbing layer downstream of the first absorbing layer for absorbing light with a wavelength below an upper band cutoff, and a confinement layer situated between the first and second absorbing layers. The lower and upper band cutoffs can be set by controlling the bandgaps and/or thicknesses of the first and second absorbing layers. The wavelength selective detector of the present invention has a good out-of-band rejection, a narrow spectral responsivity, and a high in-band responsivity. In addition, the wavelength selective detector is relatively easy to manufacture using conventional integrated circuit fabrication techniques.

Inventors:
GUENTER JAMES K
JOHNSON RALPH H
Application Number:
US0318205W
Publication Date:
August 19, 2004
Filing Date:
June 03, 2003
Export Citation:
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Assignee:
FINISAR CORPORATION
International Classes:
H01L31/0328; H01L31/10; H01L31/101; (IPC1-7): H01L31/10; H01L31/101
Foreign References:
US6396117B12002-05-28
US20020005524A12002-01-17
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