Non-Destructive Testing Of Optical Fibre Preforms

M. Miler; F. Osvald

doi:10.1117/12.942458

18 January 1985 Non-Destructive Testing Of Optical Fibre Preforms

M. Miler, F. Osvald

Proceedings Volume 0473, Symposium Optika '84; (1985) https://doi.org/10.1117/12.942458
Event: Symposium Optika '84, 1984, Budapest, Hungary

Abstract

The quality of the communication fibres depends directly on the quality of the preform. There exists a large number of various destructive and non-destructive methods for testing of the preforms. The methods are objective or visual. The visual methods are very useful for quick qualitative testing especially at the beginning phase of the development of the preform making method. This paper describes a visual method of preform testing which is based on examination of the shadow pattern arising by the transmission of the light beam across the preform. To obtain sufficient intensity of the picture the beam is scanned along the preform axis. Rotationally non-symmetric optical system and a vibrating mirror serve for the scanning. As a light source the He-Ne laser is used. The interpretation of the shadow pattern is given. The pattern contents dark and bright fringes. From their number, position and width one can evaluate the number, width and refractive index of the films deposited by the MCVD method.

Citation Download Citation

M. Miler and F. Osvald "Non-Destructive Testing Of Optical Fibre Preforms", Proc. SPIE 0473, Symposium Optika '84, (18 January 1985); https://doi.org/10.1117/12.942458

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available