Simulations of a multiple-core-fiber-based interferometer in the presence of noise

Carl E. Tuttle; Sudhakar Prasad

doi:10.1117/12.317096

24 July 1998 Simulations of a multiple-core-fiber-based interferometer in the presence of noise

Carl E. Tuttle, Sudhakar Prasad

Proceedings Volume 3350, Astronomical Interferometry; (1998) https://doi.org/10.1117/12.317096
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

We present results of extensive simulation of the performance of an optical interferometer array based on a new fiber concept with closely spaced multiple cores symmetrically arranged inside a common cladding. While sharing the principal advantages of single-mode (SM) fibers, including spatial filtering of phase-corrupted light and lossless propagation, the multiple core (MC) fibers are predicted to have an enhanced coupling efficiency and comparable noise sensitivity for typical observing conditions of low light levels and moderate to strong turbulence. Moreover, MC fibers have unique practical advantages: by presenting a larger face, they permit relatively easy focusing of light into the fiber, and they are well studied to purely fiber-based beam splitting and beam recombination, making it possible to construct an all- fiber interferometer with reduced complexity and cost. Our simulations of the MC fiber-linked interferometer array encompass a variety of conditions of atmospheric turbulence and photon-counting noise, for observations of a monochromatic point source. We compare the result from simulation to predictions from previous detailed theoretical calculations. Comparisons are made to an interferometer linked with standard SM fibers. We find that the coupling efficiency and sensitivity of the simulated interferometer using MC fibers generally agrees with theoretical predictions. Efforts to manufacture mC fibers are also reviewed.

Citation Download Citation

Carl E. Tuttle and Sudhakar Prasad "Simulations of a multiple-core-fiber-based interferometer in the presence of noise", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); https://doi.org/10.1117/12.317096

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Interferometers

Signal to noise ratio

Atmospheric propagation

Optical simulations

Telescopes

Fiber couplers

Beam splitters

Show All Keywords

Keywords/Phrases

Search In:

Publication Years