Quantitative analysis of optical reflection in amultimode interference 3 dB coupler using a low-coherence interferometric reflectometer
- 21 November 1996
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 32 (24) , 2266-2268
- https://doi.org/10.1049/el:19961486
Abstract
The quantitative reflection characteristics of multimode interference (MMI) couplers are investigated using a low-coherence interferometric reflectometer for the first time. MMI couplers are fabricated in an InP/InGaAsP/InP double-heterostructure, and the reflectivity from the interface between the MMI region and output waveguide is shown to be < –30 dB.Keywords
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