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Optics Letters

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  • Vol. 20, Iss. 17 — Sep. 1, 1995
  • pp: 1773–1775

Nondestructive waveguide loss-measurement method using self-pumped phase conjugation for optimum end-fire coupling

Simon Brülisauer, Daniel Fluck, Carlo Solcia, Tomas Pliska, and Peter Günter  »View Author Affiliations


Optics Letters, Vol. 20, Issue 17, pp. 1773-1775 (1995)
http://dx.doi.org/10.1364/OL.20.001773


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Abstract

We present a new nondestructive method for measuring the propagation loss coefficient in waveguides based on optimum end-fire coupling by self-pumped phase conjugation in a photorefractive BaTiO3 crystal. In a first pass through the waveguide, the laser beam is adapted to the waveguide mode profile, and hence the phase-conjugated beam is automatically coupled back into the guide with the optimum coupling efficiency. The propagation loss coefficient is determined by measurement of the transmittance of the phase-conjugated beam in the second pass through the wave-guide. We apply this method to measure the propagation loss coefficient of ion-implanted KNbO3 channel waveguides with an accuracy of better than 5%.

© 1995 Optical Society of America

History
Original Manuscript: April 24, 1995
Published: September 1, 1995

Citation
Simon Brülisauer, Daniel Fluck, Carlo Solcia, Tomas Pliska, and Peter Günter, "Nondestructive waveguide loss-measurement method using self-pumped phase conjugation for optimum end-fire coupling," Opt. Lett. 20, 1773-1775 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-17-1773


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References

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