Mode conversion of acoustooptic interaction in crossed channel waveguide

Ching T. Lee

doi:10.1117/12.941360

Mode conversion of acoustooptic interaction in crossed channel waveguide

Ching T. Lee

Department of Photonics

Research output: Contribution to journal › Article › peer-review

Abstract

In order to study the mechanisms of acoustooptic interactions in a channel waveguide structure, multimode crossed channel waveguides are fabricated on YZ LiNbO₃ substrate. Besides, an intedigital transduce centered at 320 MHz is made on the same substrate for AO interaction by its generated surface acoustic wave. Butt coupling is used for the coupling between Helium-Neon Laser and channel waveguide. The mode conversion due to the AO interaction in multimode channel waveguide is found. This mode conversions only occur among harmonic modes but not TE to TM modes. Those phenomena are studied and demonstrated theoretically and experimentally. In conclusion, the mode conversion of AO interaction in channel waveguide structure is caused by the acoustic beam spread. This result can be explained by phase matching condition.

Original language	English
Pages (from-to)	136-138
Number of pages	3
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	463
DOIs	https://doi.org/10.1117/12.941360
Publication status	Published - 1984 May 31

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.941360

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abstract = "In order to study the mechanisms of acoustooptic interactions in a channel waveguide structure, multimode crossed channel waveguides are fabricated on YZ LiNbO3 substrate. Besides, an intedigital transduce centered at 320 MHz is made on the same substrate for AO interaction by its generated surface acoustic wave. Butt coupling is used for the coupling between Helium-Neon Laser and channel waveguide. The mode conversion due to the AO interaction in multimode channel waveguide is found. This mode conversions only occur among harmonic modes but not TE to TM modes. Those phenomena are studied and demonstrated theoretically and experimentally. In conclusion, the mode conversion of AO interaction in channel waveguide structure is caused by the acoustic beam spread. This result can be explained by phase matching condition.",

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N2 - In order to study the mechanisms of acoustooptic interactions in a channel waveguide structure, multimode crossed channel waveguides are fabricated on YZ LiNbO3 substrate. Besides, an intedigital transduce centered at 320 MHz is made on the same substrate for AO interaction by its generated surface acoustic wave. Butt coupling is used for the coupling between Helium-Neon Laser and channel waveguide. The mode conversion due to the AO interaction in multimode channel waveguide is found. This mode conversions only occur among harmonic modes but not TE to TM modes. Those phenomena are studied and demonstrated theoretically and experimentally. In conclusion, the mode conversion of AO interaction in channel waveguide structure is caused by the acoustic beam spread. This result can be explained by phase matching condition.

AB - In order to study the mechanisms of acoustooptic interactions in a channel waveguide structure, multimode crossed channel waveguides are fabricated on YZ LiNbO3 substrate. Besides, an intedigital transduce centered at 320 MHz is made on the same substrate for AO interaction by its generated surface acoustic wave. Butt coupling is used for the coupling between Helium-Neon Laser and channel waveguide. The mode conversion due to the AO interaction in multimode channel waveguide is found. This mode conversions only occur among harmonic modes but not TE to TM modes. Those phenomena are studied and demonstrated theoretically and experimentally. In conclusion, the mode conversion of AO interaction in channel waveguide structure is caused by the acoustic beam spread. This result can be explained by phase matching condition.

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Mode conversion of acoustooptic interaction in crossed channel waveguide

Abstract

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