By Topic

A phase-modulated feedback method for testing optical isolators assembled into the laser diode package

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

2 Author(s)
Donati, S. ; Dipartimento di Elettronica, Pavia Univ., Italy ; Sorel, M.

We present an easy-to-implement method for measuring the isolation factor of an optical isolator mounted in front of its laser diode chip. The method is based on phase-modulated feedback that is induced by a moveable mirror reflecting the emitted power back into the laser, and it consists of measuring the intensity modulation of power that is found to be well correlated to the round-trip attenuation, measurement sensitivities up to -80 dB in terms of isolation have been obtained. The method has been tested successfully for several kinds of laser diodes, either FP or DFB with emission in first and third windows.

Published in:

Photonics Technology Letters, IEEE  (Volume:8 ,  Issue: 3 )