Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. (a) Schematic diagram of computer-aided Mach–Zehnder interferometer; laser beam source S, two lenses L1 and L2, two reflected mirrors M1 and M2, two beam splitters D1 and D2, rotating disk RD, prismatic device PD, CCD camera, and PC compatible computer; (b) photography of a nine-elliptical core fiber (MCF) cross section. Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE

Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. (a) Diagram of the vectors that describe the reflection of rays of light in anisotropic optical fiber with core is concentric to cladding; (b) schematic diagram of optical fiber with core is nonconcentric to cladding and the major axis of elliptical core made an angle α with the Y-axis. Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE

Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. (a) is the schematic diagram of the PM PANDA optical fiber. (b), (c), and (d) are the fringe field interference patterns of the PM PANDA optical fiber when the polarized light vibrating parallel to its axis and the common axis of both core and SAPs made an angle α=90 deg, α=15 deg, α=0 deg with Y-axis, respectively, and (e) is the skeletoning of interferogram (c). Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE

Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Profile of the mean fringe deflection along the PM PANDA optical fiber width when the polarized light vibrating parallel and perpendicular to the fiber axis and the common axis of both core and SAPs made an angle α=45 deg. Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE

Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. (a) and (b) demonstrate two different angles, α=0 deg and 90 deg, between Y-axis and the direction of incident light, respectively. Parts (i) display the position angle of the nine-elliptical core optical fiber (MCF). Parts (ii) illustrate the fringe field interference patterns of this MCF. Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE

Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Profile of the mean fringe deflection along the nine-elliptical core optical fiber (MCF) radius when the direction of incident light made an angle α=0 deg and θ=0 deg with Y-and Z-axis (fiber axis), respectively, h=31 pixels. Figure Legend: From: Extended interference formula for optical fiber characterization Opt. Eng. 2016;55(6): doi: /1.OE