CAPILLARY WALL COUPLED WHISPERING GALLERY MODE MICRORESONATOR

摘要

A microresonator structure comprises a waveguide and a microsphere. The waveguide is of elongated cylindrical shape and includes a first section of optical transmission material and a cavity section axially aligned with the first section. The cavity section includes a first cavity and a second cavity. The first cavity is adjacent to the first section and includes a first sidewall of optical transmission material with an inner surface that tapers inward to an apex positioned adjacent to the first section. The second cavity is positioned adjacent to the first cavity of hollow cylindrical shape and includes a circumferential second sidewall of optical transmission material that abuts the first sidewall. The microsphere has a spherical outer surface and is positioned within the cavity section such that the outer surface contacts a portion of the first sidewall and a portion of the second sidewall.

主权项

1. A microresonator structure comprising:
a waveguide of elongated cylindrical shape including a first section of optical transmission material and a cavity section axially aligned with the first section, the cavity section including a first cavity adjacent to the first section including a first sidewall of optical transmission material with an inner surface that tapers inward to an apex positioned adjacent to the first section and a second cavity positioned adjacent to the first cavity of hollow cylindrical shape including a circumferential second sidewall of optical transmission material that abuts the first sidewall; and a microsphere with a spherical outer surface, the microsphere positioned within the cavity section such that the outer surface contacts a portion of the first sidewall and a portion of the second sidewall,
wherein a portion of light coupled into the first section of the waveguide is coupled into the microsphere where the microsphere contacts the waveguide.