The University of Southampton
University of Southampton Institutional Repository

Alignment-free dispersion measurement with interfering biphotons

Alignment-free dispersion measurement with interfering biphotons
Alignment-free dispersion measurement with interfering biphotons
Measuring the dispersion of photonic devices with small dispersion-length products is challenging due to the phase-sensitive and alignment-intensive nature of conventional methods. In this Letter, we demonstrate a quantum technique to extract the second- and third-order chromatic dispersion of a short single-mode fiber using a fiber-based quantum nonlinear interferometer. The interferometer consists of two cascaded fiber-based biphoton sources, with each source acting as a nonlinear beam splitter. A fiber under test is placed between these two sources and introduces a frequency-dependent phase that is imprinted on the biphoton spectrum (interferogram) at the output of the interferometer. This interferogram contains the dispersion properties of the test fiber. Our technique has three novel features: (1) the broadband nature of the biphoton sources used in our setup allows accurate dispersion measurements on test devices with small dispersion-length products; (2) our all-fiber common-path interferometer requires no beam alignment or phase stabilization; and (3) multiple phase-matching processes supported in our biphoton sources enable dispersion measurements at different wavelengths, which yields the third-order dispersion achieved for the first time, to the best of our knowledge, using a quantum optical technique.
0146-9592
1484-1487
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Kazansky, Peter (2019) Alignment-free dispersion measurement with interfering biphotons. Optics Letters, 44 (6), 1484-1487. (doi:10.1364/OL.44.001484).

Record type: Article

Abstract

Measuring the dispersion of photonic devices with small dispersion-length products is challenging due to the phase-sensitive and alignment-intensive nature of conventional methods. In this Letter, we demonstrate a quantum technique to extract the second- and third-order chromatic dispersion of a short single-mode fiber using a fiber-based quantum nonlinear interferometer. The interferometer consists of two cascaded fiber-based biphoton sources, with each source acting as a nonlinear beam splitter. A fiber under test is placed between these two sources and introduces a frequency-dependent phase that is imprinted on the biphoton spectrum (interferogram) at the output of the interferometer. This interferogram contains the dispersion properties of the test fiber. Our technique has three novel features: (1) the broadband nature of the biphoton sources used in our setup allows accurate dispersion measurements on test devices with small dispersion-length products; (2) our all-fiber common-path interferometer requires no beam alignment or phase stabilization; and (3) multiple phase-matching processes supported in our biphoton sources enable dispersion measurements at different wavelengths, which yields the third-order dispersion achieved for the first time, to the best of our knowledge, using a quantum optical technique.

Text
1903.07596 - Accepted Manuscript
Restricted to Repository staff only until 18 February 2020.
Request a copy

More information

Accepted/In Press date: 9 February 2019
e-pub ahead of print date: 19 February 2019
Published date: 15 March 2019

Identifiers

Local EPrints ID: 429646
URI: https://eprints.soton.ac.uk/id/eprint/429646
ISSN: 0146-9592
PURE UUID: 75937292-9c15-4b0c-bd01-cb2233c98c78

Catalogue record

Date deposited: 03 Apr 2019 16:30
Last modified: 10 Apr 2019 16:30

Export record

Altmetrics

Contributors

Author: Peter Kazansky

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×