Patent ID: 6490391
Filing Date: 2002-12-03
Classification: G02B

Abstract:
A device, comprising:a fiber ring forming a closed optical loop to circulate optical energy and having at least a first fiber coupling port which is formed by removing a portion of fiber cladding to form an optical surface within a reach of an evanescent field of a guided mode in said fiber ring; a first substrate engaged to said fiber ring and having a first substrate surface where said first fiber coupling port is located; a fiber having a second fiber coupling port which is formed by removing a portion of fiber cladding to form an optical surface within a reach of an evanescent field of a guided mode in said fiber, a second substrate engaged to said fiber and having a second substrate surface where said second fiber coupling port is located and which faces said first substrate surface of said first substrate, wherein said second substrate is positioned to align said first and said second fiber coupling ports to allow for evanescent coupling therebetween.