Cart (Loading....) | Create Account
Close category search window
 

Low-loss broad-band LiNbO3guided-wave phase modulators using titanium/magnesium double diffusion method

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Komatsu, K. ; Opto-Electronics Research Labs., NEC Corp., Kawasaki, Japan ; Yamazaki, S. ; Kondo, M. ; Ohta, Y.

We report a new fiber-Ti:LiNbO3waveguide coupling loss reduction method and its application to modulators for phase shift keying (PSK) coherent systems. The titanium/magnesium double diffusion method, which symmetrizes the waveguide depth index profile and reduces the coupling loss by Mg diffusion after Ti-diffused waveguide formation, is proposed. A fiber-to-fiber total insertion loss of 0.5 dB for a 1-cm-long waveguide has been obtained using this method. The method was successfully applied to phase modulators by using the tapered MgO thickness diffusion which reduces the insertion loss without increasing the drive voltage. Ti:LiNbO3guided-wave phase modulators with 1.1-dB total insertion loss, 6.2- and 8.5-V modulation voltage atlambda = 1.3and 1.55 μm, respectively, and 4-GHZ bandwidth, have been obtained. A PSK heterodyne differential detection experiment at 1.2 Gbit/s was carried out successfully using one of the phase modulators described above.

Published in:

Lightwave Technology, Journal of  (Volume:5 ,  Issue: 9 )

Date of Publication:

Sep 1987

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.