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Multimode interference couplers based on photosensitive hybrid sol‐gel material
Author(s) -
Abdullah Ahmad S.,
Ibrahim Mohd H.,
Mohd Noor Muhamad Y.,
Kassim Norazan M.
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28306
Subject(s) - splitter , materials science , vinyltriethoxysilane , fabrication , hybrid coupler , optoelectronics , microwave , multi mode optical fiber , sol gel , optics , isotropic etching , etching (microfabrication) , power dividers and directional couplers , optical fiber , nanotechnology , engineering , telecommunications , silane , medicine , physics , alternative medicine , pathology , layer (electronics) , composite material
ABSTRACT Multimode interference couplers (optical splitter and cross coupler) based on photosensitive hybrid sol‐gel material derived from vinyltriethoxysilane, tetraethoxysilane, and tetrabutoxytitanate precursors are demonstrated. The couplers are fabricated on quartz substrate. A cost effective chemical etching technique is used in the couplers fabrication process to take advantage of the photosensitive nature of the hybrid material. The output power imbalance is measured to be less than 0.8 dB while the measured maximum crosstalk is −19.2 dB. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1214–1218, 2014