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Optical Engineering

Large-angle transmission and mode conversion characteristics of symmetric multimode Y-junction couplers
Author(s): Augusto Garcia-Valenzuela; Murat Hayri Eskiyerly; Massood Tabib-Azar
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Paper Abstract

We investigated the optical power transmission and conversion efficiency between the lower and higher modes in a multimode symmetric Y-junction waveguide. Using the overlap integrals of the fields of the incident and transmitted guided-wave modes at the Y junction, we obtained a first-order approximation of the transmission characteristics and found that there is a possibility of transmitting a useful amount of the incident optical power into the output branching waveguides at very large branching angles. Results showed that an appropriate branching angle of the Y junction can be used to selectively transmit the waveguide modes into the output branches. We developed a very simple model using ray optics to explain the results on a more intuitive basis.

Paper Details

Date Published: 1 April 1994
PDF: 5 pages
Opt. Eng. 33(4) doi: 10.1117/12.166932
Published in: Optical Engineering Volume 33, Issue 4
Show Author Affiliations
Augusto Garcia-Valenzuela, Case Western Reserve Univ. (United States)
Murat Hayri Eskiyerly, Case Western Reserve Univ. (United States)
Massood Tabib-Azar, Case Western Reserve Univ. (United States)

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