US 9,810,557 B2
Multicore optical fiber apparatus, methods, and applications
Rodrigo Amezcua-Correa, Orlando, FL (US); Axel Schulzgen, Winter Park, FL (US); and Jose Enrique Antonio Lopez, Orlando, FL (US)
Assigned to UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC., Orlando, FL (US)
Appl. No. 15/117,820
Filed by UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC., Orlando, FL (US)
PCT Filed Feb. 4, 2015, PCT No. PCT/US2015/014356
§ 371(c)(1), (2) Date Aug. 10, 2016,
PCT Pub. No. WO2015/163963, PCT Pub. Date Oct. 29, 2015.
Claims priority of provisional application 61/979,057, filed on Apr. 14, 2014.
Claims priority of provisional application 61/937,790, filed on Feb. 10, 2014.
Prior Publication US 2017/0167899 A1, Jun. 15, 2017
Int. Cl. G02B 6/00 (2006.01); G01D 5/353 (2006.01); G01K 11/32 (2006.01)
CPC G01D 5/3538 (2013.01) [G01D 5/35329 (2013.01); G01D 5/35351 (2013.01); G01K 11/3206 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A fiber optic sensor, comprising:
a single mode optical fiber (SMF)-multiple core optical fiber (MCF)-single mode optical fiber (SMF-MCF-SMF) set, the set further comprising:
a length segment of the multiple core optical fiber (MCF) having a central optical core and at least six optical cores disposed circumferentially about the central core, and a cladding having a refractive index, nc, disposed there around, wherein each of the cores is characterized by a refractive index, ni, each of which ni is greater than nc; and
two respective length segments of the single mode fiber (SMF) having a single, central optical core and a cladding there around,
wherein the length segment of the MCF is disposed intermediate the two respective length segments of the SMF in a serial SMF-MCF-SMF relationship, wherein the central core of the length segment of the MCF is in optical alignment with the central cores of the two respective length segments of the SMFs.