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

Localized-cavity-loss-induced external mode coupling in optical microresonators

Not Accessible

Your library or personal account may give you access

Abstract

We study the external mode coupling in optical microresonators with a loss-dependent coupling coefficient. In the case of dielectric optical microresonators with localized absorption or radiation loss, the mode coupling between whispering gallery modes (WGMs) can result in a destructive interference of the mode fields in the lossy area and consequently reduce the mode loss. Once the reduction overcomes the introduced loss, the actual mode loss is reduced by increasing the loss factor. An anomalous relation between the actual mode loss and the introduced loss factor is then found, while the mode frequencies show parallel, crossing, or anticrossing behavior under different coupling conditions; such phenomena can be well explained by the analysis based on the coupling theory. The results show that the localized cavity loss can suppress the original WGMs and generate high-Q coupled modes, which illustrate a possible way to dynamically control the optical modes inside the microresonator.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Analysis of third-order nonlinearity effects in very high-Q WGM resonator cavity ringdown spectroscopy

Alphonse Rasoloniaina, Vincent Huet, Monique Thual, Stéphane Balac, Patrice Féron, and Yannick Dumeige
J. Opt. Soc. Am. B 32(3) 370-378 (2015)

Parity-time symmetric coupled microresonators with a dispersive gain/loss

Sendy Phang, Ana Vukovic, Stephen C. Creagh, Trevor M. Benson, Phillip D. Sewell, and Gabriele Gradoni
Opt. Express 23(9) 11493-11507 (2015)

Interaction of whispering gallery modes in integrated optical microring or microdisk circuits: hybrid coupled mode theory model

Ellen F. Franchimon, Kirankumar R. Hiremath, Remco Stoffer, and Manfred Hammer
J. Opt. Soc. Am. B 30(4) 1048-1057 (2013)

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 (6)

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 (6)

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