Document Type

Article

Journal/Book Title/Conference

Applied Optics

Issue

13

Publication Date

1-1-1974

First Page

2651

Last Page

2653

DOI

10.1364/AO.13.002651

Abstract

The application of multiplex spectrometry to cryogenically cooled LWIR extrinsic photodetectors is limited by system noise. This noise limitation results in a detector NEP that is directly proportional to bandwidth. Therefore, multiplex schemes that require increased bandwidth are not productive of real advantage. However, doubly encoded systems that are based on 2n - 1 or n + N - 1 measurements have the potential to provide a real throughput gain proportional to the number of elements used on the throughput matrix.

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