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Proceedings Paper

Tunability of cascaded grating that is used in distributed feedback laser
Author(s): Mohammad H. Rahnavard; O. R. Moheimany; Habibollah Abiri
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Paper Abstract

It is shown that there is reflected wave in corrugated waveguide. The reflected wave is maximum near Bragg frequency and decreases symmetrically as frequency changes near Bragg frequency. The constructed filter using a corrugated waveguide is not tunable. Using several corrugated waveguides in cascade it is possible to obtain tunable bandpass filter. In this paper formulas for transmittance of two and three cascaded grating stages, separated by phase shift sections, are developed and their responses are studied.

Paper Details

Date Published: 1 February 1991
PDF: 8 pages
Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24767
Show Author Affiliations
Mohammad H. Rahnavard, Shiraz Univ. (Iran)
O. R. Moheimany, Shiraz Univ. (Iran)
Habibollah Abiri, Shiraz Univ. (Iran)

Published in SPIE Proceedings Vol. 1367:
Fiber Optic and Laser Sensors VIII
Ramon P. DePaula; Eric Udd, Editor(s)

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