Crosstalk in Ti: LiNbO3 Directional Coupler Switches Caused by Ti Concentration Fluctuations

Leon McCAUGHAN; Kent D. Choquette

doi:10.1109/JQE.1986.1073049

Crosstalk in Ti: LiNbO₃ Directional Coupler Switches Caused by Ti Concentration Fluctuations

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

Abstract

We have observed random fluctuations in the local Ti concentration profiles of Ti-diffused LiNbO₃ waveguides. Calculations show that these variations explain the degraded switch extinction ratio (i.e., crosstalk) and other nonideal characteristics observed in LiNbO₃ optical switches. We also demonstrate by calculation a new device configuration for eliminating this source of crosstalk.

Original language	English (US)
Pages (from-to)	947-951
Number of pages	5
Journal	IEEE Journal of Quantum Electronics
Volume	22
Issue number	6
DOIs	https://doi.org/10.1109/JQE.1986.1073049
State	Published - Jun 1986
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Online availability

10.1109/JQE.1986.1073049

Library availability

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Cite this

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title = "Crosstalk in Ti: LiNbO3 Directional Coupler Switches Caused by Ti Concentration Fluctuations",

abstract = "We have observed random fluctuations in the local Ti concentration profiles of Ti-diffused LiNbO3 waveguides. Calculations show that these variations explain the degraded switch extinction ratio (i.e., crosstalk) and other nonideal characteristics observed in LiNbO3 optical switches. We also demonstrate by calculation a new device configuration for eliminating this source of crosstalk.",

author = "Leon McCAUGHAN and Choquette, {Kent D.}",

year = "1986",

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