DIC imaging of an optical fiber Bragg grating

Author

Dragomir, N.M. ; Baxter, G.W. ; Collins, S.F. ; Farrell, P.M. ; Stevenson, A.J. ; Garchev, D.D. ; Roberts, A.

Author_Institution

Opt. Technol. Res. Lab., Victoria Univ., Melbourne, Vic., Australia

fYear

2002

fDate

17-22 Mar 2002

Firstpage

700

Abstract

Summary form only given. In this presentation, a direct, non-destructive and highly accurate method based on Nomarski differential interference contrast (DIC) microscopy method is considered for investigating FBGs. The Nomarski DIC microscopy is a method that allows the enhancement of the contrast of phase structures. The method relies on the interference of a pair of wave fronts to generate contrast and, as a consequence, it is possible to reach the limit of resolution of the microscope while, at the same time, limiting the depth field to a very narrow range.

Keywords

Bragg gratings; image resolution; light interference; measurement errors; optical fibre testing; optical images; optical microscopy; Nomarski differential interference contrast microscopy; accurate method; depth field; optical fiber Bragg grating; phase gradient; phase structures contrast enhancement; predominately phase information; refractive index; structural information; transparent object; weakly absorbing objects; Australia; Bragg gratings; Fiber gratings; Microscopy; Optical fibers; Optical imaging; Optical refraction; Optical scattering; Optical surface waves; Optical variables control;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002

Print_ISBN

1-55752-701-6

Type

conf

DOI

10.1109/OFC.2002.1036659

Filename

1036659