1 July 2011 Photonic integrated Brillouin optical time domain reflection readout unit
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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.
© (2011) Society of Photo-Optical Instrumentation Engineers (SPIE)
Robert F. Klein Breteler, Robert F. Klein Breteler, Jos J. G. M. van der Tol, Jos J. G. M. van der Tol, Manuela Felicetti, Manuela Felicetti, Bart Sasbrink, Bart Sasbrink, Meint K. Smit, Meint K. Smit, } "Photonic integrated Brillouin optical time domain reflection readout unit," Optical Engineering 50(7), 071111 (1 July 2011). https://doi.org/10.1117/1.3574377 . Submission:
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