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

Efficient excitation and phase matching of fiber-coupled degenerate whispering gallery modes

Not Accessible

Your library or personal account may give you access

Abstract

The ability of optical whispering gallery mode (WGM) resonators to store energy in a very small volume for a long time enables their use in practical applications as low-threshold lasers, high-sensitivity sensors, and tunable add-drop filters. In this paper, we express in detail the tapered fiber asymmetric coupling mechanism to multimode microsphere resonators in order to selectively excite or collect WGMs. It is shown that due to the close effective refractive indices of degenerate spherical WGMs, depending on the amount of phase matching and overlap of fiber and resonator modes, a combination of WGMs with certain intrinsic losses is excited. By precisely designing the taper dimensions, critical coupling to one or a group of modes can be satisfied. This paper provides a general figure of merit for designing taper-coupled microresonators that can be employed in nonlinear optics and lasers in which the intra-cavity field distribution determines the characteristics of the device.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
A general model for taper coupling of multiple modes of whispering gallery resonators and application to analysis of coupling-induced Fano interference in a single cavity

Shahab Bakhtiari Gorajoobi, Ganapathy Senthil Murugan, and Michalis N. Zervas
Opt. Express 27(18) 25493-25501 (2019)

Phase-matched excitation of whispering-gallery-mode resonances by a fiber taper

J. C. Knight, G. Cheung, F. Jacques, and T. A. Birks
Opt. Lett. 22(15) 1129-1131 (1997)

Spectral cleaning and output modal transformations in whispering-gallery-mode microresonators

Mohd Narizee Mohd Nasir, G. Senthil Murugan, and Michalis N. Zervas
J. Opt. Soc. Am. B 33(9) 1963-1970 (2016)

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 (9)

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 (3)

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