Optical properties of wide single-mode strip and grating loaded channel waveguides

Journal Article · Thu Dec 31 00:00:00 EST 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N12ABEH014197· OSTI ID:21467066

Tsarev, Andrei V ^[1]

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1. Rzhanov Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk (Russian Federation)

New wide single-mode strip and grating loaded (SGL) channel waveguides made of silicon nitride on the oxide buffer layer of a planar silicon-on-insulator waveguide are studied. The central 10-lm-wide strip produces a multi-mode channel waveguide and diffraction gratings with a period 0.6 lm built on the structure edges produce mode-dependent additional losses due to radiation to the surrounding medium. The optical properties of these waveguides are discussed using the results of a three-dimensional numerical simulation by the FDTD and BPM methods. It is shown that a wide SGL waveguide is quasi-single-mode one because it has a small propagation loss ({approx} 0.3 dB cm{sup -1}) for the fundamental mode and a high (up to -20 dB cm{sup -1}) loss for the higher order modes. The new SGL waveguides are CMOS compatible and can become basic for fabricating new photonic elements, including tunable optical filters and multi-plexers based on the multireflector technology. (waveguides)

• OSTI ID: 21467066
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 12; Other Information: DOI: 10.1070/QE2009v039n12ABEH014197; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BUFFERS
COMPUTERIZED SIMULATION
DIFFRACTION GRATINGS
LAYERS
OPTICAL FILTERS
OPTICAL PROPERTIES
SILICON
SILICON NITRIDES
THREE-DIMENSIONAL CALCULATIONS
WAVEGUIDES
ELEMENTS
FILTERS
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SEMIMETALS
SILICON COMPOUNDS
SIMULATION