Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

High-efficiency light modulator using guided-to-radiation mode coupling in a graded-index waveguide

Not Accessible

Your library or personal account may give you access

Abstract

Analysis and experiment were done on a light intensity modulator using guided-to-radiation mode coupling in a graded-index waveguide; high-efficiency modulation was demonstrated in the Nb-diffused Z-cut LiTaO3 waveguide. In the analysis, we developed a numerical integration method for modal analysis of a graded-index waveguide and showed that more than 50-dB/cm modulation efficiency is obtainable in a Nb-diffused Z-cut LiTaO3 waveguide by choosing an appropriate amount and depth of Nb diffusion. After studying the characteristics of Nb diffusion into Z-cut LiTaO3 we fabricated slab and channel waveguide modulators. The measured modulation depth was 28 dB/5 mm at 400 V across 50-μm spaced electrodes in the slab modulator and was 19 dB/5 mm at 70 V across 10-μm spaced electrodes in the channel modulator.

© 1986 Optical Society of America

Full Article  |  PDF Article
More Like This
Light intensity modulation based on guided-to-radiation mode coupling in heterostructure waveguides

Hidetoshi Onodera, Ikuo Awai, Masamitsu Nakajima, and Junichi Ikenoue
Appl. Opt. 23(1) 118-123 (1984)

High-efficiency light modulator using guided-to-radiation mode coupling: a proposal

Masamitsu Nakajima, Hidetoshi Onodera, Ikuo Awai, and Jun-ichi Ikenoue
Appl. Opt. 20(14) 2439-2443 (1981)

Characterization of Ti:LiNbO3 deep waveguides diffused in dry and wet oxygen ambient

O. Eknoyan, A. S. Greenblatt, W. K. Burns, and C. H. Bulmer
Appl. Opt. 25(5) 737-739 (1986)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (40)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved