Investigation of Bragg gratings on planar InGaAsP/InP waveguides at normal and oblique incidence
- 1 April 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 7 (4) , 735-739
- https://doi.org/10.1109/50.19104
Abstract
The polarization-dependent mode coupling of Bragg gratings on planar InGaAsP/InP waveguides is investigated by transmittance and reflectance measurements at normal and oblique incidence in the 1.5- mu m wavelength region. Strong coupling between TE (transverse electric) and TM (transverse magnetic) modes is observed at oblique incident, whereas the TE-TE coupling vanishes at an incidence angle of 45 degrees . The behavior of the near field close to the Bragg wavelength and the effects of radiation into the substrate are analyzed. It is experimentally shown that small deformations of the phase fronts on the input side lead to strong interference effects on the output side.Keywords
This publication has 11 references indexed in Scilit:
- GaAs/GaAlAs RIB waveguide grating filters for λ = 1.5μmElectronics Letters, 1987
- InGaAsP Y-branch grating demultiplexerElectronics Letters, 1987
- Waveguide Diffraction Gratings In Integrated OpticsPublished by SPIE-Intl Soc Optical Eng ,1985
- InGaAsP/InP waveguide grating filters for λ=1.5 μmApplied Physics Letters, 1984
- Monolithic integrated microgratings and photodiodes for wavelength demultiplexingApplied Physics Letters, 1982
- Coupled wave analysis of obliquely incident waves in thin film gratingsApplied Optics, 1981
- Microgratings for high-efficiency guided-beam deflection fabricated by electron-beam direct-writing techniquesApplied Optics, 1980
- Integrated optical branching filter consisting of three-dimensional waveguide and its nonradiative conditionIEEE Transactions on Circuits and Systems, 1979
- Mode conversion and optical filtering of obliquely incident waves in corrugated waveguide filtersIEEE Journal of Quantum Electronics, 1979
- Chirped-grating demultiplexers in dielectric waveguidesApplied Physics Letters, 1977