Measuring the refractive-index profile of optical fibers by the cladding-mode near-field technique.

نویسندگان

  • W H Hatton
  • E L Buckland
  • M Nishimura
چکیده

A new measurement system has been developed that simply determines the refractive-index profile of any optical fiber by analyzing the propagation of cladding modes. Measurement accuracy was verified by a comparison with the refractive near-field method, and a sufficient resolution level was achieved to produce the fine structural details in single-mode fibers.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Determination of Refractive Index and Confinement Losses in Photonic Crystal Fibers Using FDFD Method: A Comparative Analysis

In this paper, we present a comparative numerical analysis to determine the refractive index of photonic crystal fibers (PCFs) by using FDFD method and used the results to evaluate the confinement losses of PCFs by considering the effects of air-hole rings in the cladding. It is shown that by increasing the wavelength, the imaginary part of refraction index rises, resulting in increase of conf...

متن کامل

Optical Fibre Refractive Index Reconstruction from Mode Near Field

ABSTRACT. A novel and accurate refractive index profile synthesis method for optical fibres is developed using knowledge of the fundamental or higher order mode near field. This fundamental method is based on inverse transmission line principles. From Maxwell’s equations, we derive a transmission line equivalent circuit for a circularly symmetric optical fibre with arbitrary refractive index. W...

متن کامل

Specialty Optical Fibers: Analysis and Characterization

This paper gives a closer insight to novel optical fibers by applying specialized numerical analysis approaches. First we have described a newly developed algorithm based on the spectral domain approach, which is employed in the analysis of multilayer optical fibers with circular symmetry. It computes the Green’s functions of the considered fiber and locates the appropriate poles, which corresp...

متن کامل

Weakly guiding fibers.

Thin glass fibers imbedded into a glass cladding of slightly lower refractive index represent a promising medium for optical communication. This article presents simple formulas and functions for the fiber parameters as a help for practical design work. It considers the propagation constant, mode delay, the cladding field depth, and the power distribution in the fiber cross section. Plots vs fr...

متن کامل

Fabrication of a compact reflective long-period grating sensor with a cladding-mode-selective fiber end-face mirror.

A long-period grating (LPG) based compact optical fiber sensor working in reflection mode is demonstrated. A technique to make a mirror on the cladding region of a fiber end-face to reflect only the cladding modes was realized by growing a polymeric microtip on the core region of the fiber end-face, by photopolymerization, followed by coating the fiber end-face with an aluminum film. Using the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Optics letters

دوره 12 9  شماره 

صفحات  -

تاریخ انتشار 1987