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Optical Engineering

Experimental assessment of access guide first-order mode effect on multimode interference couplers
Author(s): Carmen Vazquez; Candido Aramburu; Marko Galarza; Manuel Lopez-Amo
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Paper Abstract

Experimental results on multimode interference (MMI) coupler performance, when the access waveguides are not single mode, are shown. The 3-dB MMI couplers based on restricted interference are fabricated in InP/ InGaAsP buried waveguides. Unbalanced measurements for different excitation conditions are shown. A drastically unbalanced decline of 30% is reported for an alignment deviation of 6 ?m. Less critical effects are measured when misalignment is controlled below 2 ?m. A beam propagation method and modal analysis are used to validate experimental results.

Paper Details

Date Published: 1 July 2001
PDF: 3 pages
Opt. Eng. 40(7) doi: 10.1117/1.1385338
Published in: Optical Engineering Volume 40, Issue 7
Show Author Affiliations
Carmen Vazquez, Carlos III Univ. (Spain)
Candido Aramburu, Univ. Publica de Navarra (Spain)
Marko Galarza, Univ. Publica de Navarra (Belgium)
Manuel Lopez-Amo, Univ. Publica de Navarra (Spain)

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