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.

© 1974 Optical Society of America

Multiplexed Dispersive Spectrometers Using Reduced Background Infrared Detectors. Comment 2

Clair L. Wyatt
Appl. Opt. 14(4) 810_1-810 (1975)

Multiplexed Dispersive Spectrometers Using Reduced Background Infrared Detectors: Comment 1

John A. Decker
Appl. Opt. 14(4) 810-810 (1975)

Doubly Multiplexed Dispersive Spectrometers

M. Harwit, P. G. Phillips, T. Fine, and N. J. A. Sloane
Appl. Opt. 9(5) 1149-1154 (1970)

Theoretical Comparison of Singly Multiplexed Hadamard Transform Spectrometers and Scanning Spectrometers

N. M. Larson, R. Crosmun, and Y. Talmi
Appl. Opt. 13(11) 2662-2668 (1974)

Multiplex Advantage in the Detection of Optical Images in the Photon Noise Limit

C. J. Oliver and E. R. Pike
Appl. Opt. 13(1) 158-161 (1974)