US 11,698,494 B2
Miniaturized integrated frequency locked optical whispering evanescent resonator devices
Judith Su, Tucson, AZ (US); Shuang Hao, Tucson, AZ (US); and Gwangho Choi, Tucson, AZ (US)
Assigned to ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA, Tucson, AZ (US)
Appl. No. 17/430,218
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
PCT Filed Feb. 11, 2020, PCT No. PCT/US2020/017678
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/167776, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/804,028, filed on Feb. 11, 2019.
Prior Publication US 2022/0163724 A1, May 26, 2022
Int. Cl. G02B 6/293 (2006.01); G01N 21/77 (2006.01)
CPC G02B 6/29341 (2013.01) [G01N 21/7746 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A miniaturized integrated frequency locked optical whispering evanescent resonator, comprising:
an optical source;
an optical path having a first end and a second end, said optical path arranged to be optically coupled to said optical source at said first end;
an optical resonator disposed proximate said optical path along a side of said optical path between said first and second ends, said optical resonator having an optical whispering-gallery mode and being optically coupled to said optical path through an evanescent field to excite said optical whispering-gallery mode;
an optical receiver arranged to be optically coupled to said second end of said optical path; and
a digital data processor configured to communicate with said optical receiver and said optical source,
wherein said digital data processor comprises a frequency locking system and a data acquisition system configured thereon,
wherein said frequency locking system controls a frequency of said optical source to be tuned to said optical whispering-gallery mode of said optical resonator, and
wherein the frequency locking system and the data acquisition system are implemented in a miniature sized single-board computer such that said miniaturized integrated frequency locked optical whispering evanescent resonator weighs less than 15 kg and is containable within a volume less than 30 liters.