A proposed FM phototube for demodulating microwave-frequency-modulated light signals
- 1 July 1962
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IRE Transactions on Electron Devices
- Vol. 9 (4) , 322-329
- https://doi.org/10.1109/t-ed.1962.14992
Abstract
A microwave phototube for demodulating frequency-modulated light signals is proposed. The demodulation is based upon the conversion of the frequency-modulated light into space-modulated light via an optical dispersing element. This space-modulated light is then incident on a photocathode where it is the source of transverse electron beam waves. A complete spectral analysis of the demodulation process is presented. It is shown that a quasi-steady-state viewpoint, i. e., that of an optical signal with slowly varying frequency is permissible only if the optical resolution is sufficiently low. Design parameters for a phototube based on the use of a Michelson echelon are presented. A related scheme employing a Fabry-Perot etalon is also discussed.Keywords
This publication has 2 references indexed in Scilit:
- Microwave Modulation of the Electro-Optic Effect in KPPhysical Review Letters, 1961
- Waves on a Filamentary Electron Beam in a Transverse-Field Slow-Wave CircuitJournal of Applied Physics, 1960