Crosstalk Characteristics of Ti-LiNbO3 Intersecting Waveguides and Their Application as TE/TM Mode Splitters

Hirochika Nakajima; Tetsuo Horimatsu; Minoru Seino; Ippei Sawaki

doi:10.1109/TMTT.1982.1131106

Crosstalk Characteristics of Ti-LiNbO3 Intersecting Waveguides and Their Application as TE/TM Mode Splitters

Hirochika Nakajima, Tetsuo Horimatsu, Minoru Seino, Ippei Sawaki

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

11 Citations (Scopus)

Abstract

Crosstalk characteristics of an intersecting waveguide are presented. Two straight channel waveguides which intersect at an angle of a few degrees on y-cut LiNbO3 were fabricated by in-diffusion of Ti. Experimental results show that the crosstalk characteristics are determined by the refractive index change profile and the geometry of intersection associated with guided wave modes. In a special case, a TE/TM mode splitter was obtained by using the intersecting waveguide which provides adequate anisotropy by the change in refractive indices. Splitting ratio was 17 and 14 dB for the TE and TM modes, respectively.

Original language	English
Pages (from-to)	617-622
Number of pages	6
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	30
Issue number	4
DOIs	https://doi.org/10.1109/TMTT.1982.1131106
Publication status	Published - 1982
Externally published	Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics
Radiation

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10.1109/TMTT.1982.1131106

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AU - Nakajima, Hirochika

AU - Horimatsu, Tetsuo

AU - Seino, Minoru

AU - Sawaki, Ippei

PY - 1982

Y1 - 1982

N2 - Crosstalk characteristics of an intersecting waveguide are presented. Two straight channel waveguides which intersect at an angle of a few degrees on y-cut LiNbO3 were fabricated by in-diffusion of Ti. Experimental results show that the crosstalk characteristics are determined by the refractive index change profile and the geometry of intersection associated with guided wave modes. In a special case, a TE/TM mode splitter was obtained by using the intersecting waveguide which provides adequate anisotropy by the change in refractive indices. Splitting ratio was 17 and 14 dB for the TE and TM modes, respectively.

AB - Crosstalk characteristics of an intersecting waveguide are presented. Two straight channel waveguides which intersect at an angle of a few degrees on y-cut LiNbO3 were fabricated by in-diffusion of Ti. Experimental results show that the crosstalk characteristics are determined by the refractive index change profile and the geometry of intersection associated with guided wave modes. In a special case, a TE/TM mode splitter was obtained by using the intersecting waveguide which provides adequate anisotropy by the change in refractive indices. Splitting ratio was 17 and 14 dB for the TE and TM modes, respectively.

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Crosstalk Characteristics of Ti-LiNbO3 Intersecting Waveguides and Their Application as TE/TM Mode Splitters

Abstract

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