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

All-Fiber Laser Beam Shaping Using a Long-Period Grating

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)
Xijia Gu ; Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, ON ; Mohammed, W. ; Li Qian ; Smith, P.W.E.

We demonstrate a simple all-fiber device that can transform a Gaussian-shaped laser beam into a uniform intensity beam. The device is based on the interaction of a core mode and a cladding mode partially coupled out by a long-period grating. We have achieved good beam uniformity (<4% intensity variation) and reduced beam divergence (1.5deg of half divergence angle) while keeping the insertion loss to 0.1 dB. The measured beam uniformity matches well with simulated results. The device can also change the beam shape from a Gaussian to a donut, to top hat, and back to a Gaussian, dynamically by tuning the laser wavelength.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 13 )

Date of Publication:

July1, 2008

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.