Acousto-Optic Interferometric Spectrum Analyzer With Direct Rf Frequency Output

E. H. Young; B. A. Morris; R. V. Belfatto; C. Bertram

doi:10.1117/12.964335

24 September 1986 Acousto-Optic Interferometric Spectrum Analyzer With Direct Rf Frequency Output

E. H. Young, B. A. Morris, R. V. Belfatto, C. Bertram

Proceedings Volume 0639, Optical Information Processing II; (1986) https://doi.org/10.1117/12.964335
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

The purpose of this study was to investigate a new heterodyne AO spectrum analyzer configuration and provide preliminary results for possible applications in real-time spectrum analysis. This spectrum analyzer was unique in that it used an interferometric configuration to generate direct channelized RF outputs at the input frequencies. Acousto-optic spectrum analyzers use the acousto-optic interaction to create a Fourier plane of light in space. Simultaneous spectrum analysis of multiple signals is possible in real-time in a configuration that continuously receives all input signals due to the channelization of the acousto-optic cell. In a nonheterodyne configuration, the frequency is read as positions in spacer. The interferometric spectrum analyzer floods the frequency plane with coherent light to recover the phase information which is modulated onto the diffracted beam by the Bragg cell. Frequency is read spatially but the signal output by the spectrum analyzer can be retransmitted for phase analysis, relative power readings, and other purposes as well. In addition, and perhaps most importantly, the dynamic range is increased by the heterodyne structure.

Citation Download Citation

E. H. Young, B. A. Morris, R. V. Belfatto, and C. Bertram "Acousto-Optic Interferometric Spectrum Analyzer With Direct Rf Frequency Output", Proc. SPIE 0639, Optical Information Processing II, (24 September 1986); https://doi.org/10.1117/12.964335

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available