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Accurate tuning of mismatched twin-core fibre filters

Accurate tuning of mismatched twin-core fibre filters
Accurate tuning of mismatched twin-core fibre filters
We have demonstrated a reproducible and accurate way of tuning the coupling wavelength of a mismatched twin-core filter. This method allows high quality all-fiber filters to be implemented with low loss at any desired wavelength over a range of few hundred nanometers from the same fiber. An ~500-nm tuning range is demonstrated, limited only by the measurement setup and not by the technique itself. Highly accurate control of the filtering wavelength in combination with control of filtering strength by adjustment of the length of the twin-core fibers allows complex filter profiles to be implemented by cascading of several different filters. These filters are also very stable to a change in temperature (~0.26 nm/100°C at 1.55µm) and strain (less than 0.3 nm/mstrain at 1.55µm), permitting easy packaging.
0146-9592
1277-1279
Ortega, B.
77f4ed17-921e-414a-ba73-ed3fa6cf4d02
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e
Ortega, B.
77f4ed17-921e-414a-ba73-ed3fa6cf4d02
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e

Ortega, B. and Dong, L. (1998) Accurate tuning of mismatched twin-core fibre filters. Optics Letters, 23 (16), 1277-1279. (doi:10.1364/OL.23.001277).

Record type: Article

Abstract

We have demonstrated a reproducible and accurate way of tuning the coupling wavelength of a mismatched twin-core filter. This method allows high quality all-fiber filters to be implemented with low loss at any desired wavelength over a range of few hundred nanometers from the same fiber. An ~500-nm tuning range is demonstrated, limited only by the measurement setup and not by the technique itself. Highly accurate control of the filtering wavelength in combination with control of filtering strength by adjustment of the length of the twin-core fibers allows complex filter profiles to be implemented by cascading of several different filters. These filters are also very stable to a change in temperature (~0.26 nm/100°C at 1.55µm) and strain (less than 0.3 nm/mstrain at 1.55µm), permitting easy packaging.

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Published date: 15 August 1998

Identifiers

Local EPrints ID: 77903
URI: https://eprints.soton.ac.uk/id/eprint/77903
ISSN: 0146-9592
PURE UUID: fdbb22f2-fe29-410a-acfb-f02a9becd28e

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Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:13

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