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Optical Engineering

Photonic integrated Brillouin optical time domain reflection readout unit
Author(s): Robert F. Klein Breteler; Jos J. G. M. van der Tol; Manuela Felicetti; Bart Sasbrink; Meint K. Smit
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Paper Abstract

Brillouin scattering can be used for determining strain distributions along fibers. This is a convenient way to monitor the structural integrity of large constructions. However, the high cost of the optical circuitry has prevented wide use of this technique. We report on a design study on an integrated optical circuit for a Brillouin optical time domain reflection readout unit with low-cost potential. The circuit contains narrow linewidth tuneable distributed Bragg reflector (DBR) lasers, photodiodes with an optical mixer for coherent detection, a 10-bit digitally switched delay line for frequency tuning, and a switching fabric that allows three modes of operation. Such a circuit can be realized through one of the upcoming foundries in the field of photonic integration.

Paper Details

Date Published: 1 July 2011
PDF: 9 pages
Opt. Eng. 50(7) 071111 doi: 10.1117/1.3574377
Published in: Optical Engineering Volume 50, Issue 7
Show Author Affiliations
Robert F. Klein Breteler, Technische Univ. Eindhoven (Netherlands)
Jos J. G. M. van der Tol, Technische Univ. Eindhoven (Netherlands)
Manuela Felicetti, Technische Univ. Eindhoven (Netherlands)
Bart Sasbrink, Technische Univ. Eindhoven (Netherlands)
Meint K. Smit, Technische Univ. Eindhoven (Netherlands)

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