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Proceedings Paper

Mode conversion and large-angle transmission in symmetric multimode Y-junction couplers
Author(s): Murat Hayri Eskiyerly; Augusto Garcia-Valenzuela; Massood Tabib-Azar
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Paper Abstract

A multimode symmetric Y-junction waveguide is investigated and the optical power transmission and conversion efficiency between the lower and higher modes was calculated. Overlap integrals of the fields of the incident and transmitted guided-wave modes at the Y- junction were used and it is shown that there is a possibility of transmitting up to 29 percent of the incident optical power into the output branching waveguides at very large branching angles. Results show that an appropriate branching angle of the Y-junction can be used to selectively transmit the waveguide modes into the output branches and this can be used advantageously in integrated optic devices. A very simple model using ray optics is developed to explain the results on physical basis. With this simple model we developed a simple framework to interpret the results of the overlap integrals.

Paper Details

Date Published: 2 March 1993
PDF: 13 pages
Proc. SPIE 1793, Integrated Optics and Microstructures, (2 March 1993); doi: 10.1117/12.141231
Show Author Affiliations
Murat Hayri Eskiyerly, Case Western Reserve Univ. (United States)
Augusto Garcia-Valenzuela, Case Western Reserve Univ. (United States)
Massood Tabib-Azar, Case Western Reserve Univ. (United States)

Published in SPIE Proceedings Vol. 1793:
Integrated Optics and Microstructures
Massood Tabib-Azar; Dennis L. Polla, Editor(s)

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