Experimental assessment of access guide first-order mode effect on multimode interference couplers

Authors
Vazquez, C Aramburu, C Galarza, M Lopez-Amo, M
Citation
C. Vazquez et al., Experimental assessment of access guide first-order mode effect on multimode interference couplers, OPT ENG, 40(7), 2001, pp. 1160-1162
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICAL ENGINEERING
ISSN journal
00913286 → ACNP
Volume
40
Issue
7
Year of publication
2001
Pages
1160 - 1162
Database
ISI
SICI code
0091-3286(200107)40:7<1160:EAOAGF>2.0.ZU;2-2
Abstract
Experimental results on multimode interference (MMI) coupler performance, w hen the access waveguides are not single mode, are shown. The 3-dB MMI coup lers 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 alignmen t deviation of 6 mum. Less critical effects are measured when misalignment is controlled below 2 mum. A beam propagation method and modal analysis are used to validate experimental results. (C) 2001 Society of Photo-Optical I nstrumentation Engineers.