By Topic

Gain-Induced Evolution of Mode Splitting Spectra in a High- Q Active Microresonator

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
$33 $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)
Lina He ; Electrical and Systems Engineering Department, Washington University in St. Louis, St. Louis, MO, USA ; Sahin Kaya Ozdemir ; Yun-Feng Xiao ; Lan Yang

We investigate the mode splitting phenomenon in a fiber taper-coupled active microresonator excited below the lasing threshold. Effects of optical gain on the split modes are studied by monitoring the transmission spectra of the resonator at various excitation levels. We demonstrate Q-factor enhancement as well as amplification of the split modes by optical gain. It is observed that the responses of the split modes to the gain vary at different taper-resonator coupling conditions. Mode splitting may reflect itself as two dips, two peaks, or one dip and one peak in the transmission spectra depending on the coupling conditions, the interactions of the scatterers with the optical modes, and the levels of optical gain. Experimental results match well with the theoretical predictions. Our investigation shows that optical gain in the microresonator can be utilized not only to manipulate the mode splitting profiles but also to help improve the resolvability of the split modes.

Published in:

IEEE Journal of Quantum Electronics  (Volume:46 ,  Issue: 11 )