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  • Vol. 21, Iss. 4 — Feb. 15, 1996
  • pp: 302–304

All-fiber three-path Mach–Zehnder interferometer

Gregor Weihs, Michael Reck, Harald Weinfurter, and Anton Zeilinger  »View Author Affiliations


Optics Letters, Vol. 21, Issue 4, pp. 302-304 (1996)
http://dx.doi.org/10.1364/OL.21.000302


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Abstract

We report the realization of a three-path Mach–Zehnder interferometer using single-mode fibers and two integrated 3 × 3 fiber couplers. We observed enhanced phase sensitivity, as compared with two-path interferometers, with a visibility of the interference pattern of more than 97%. This interferometer has an analog in two-photon interferometry, and we believe it to be the first nontrivial example of N × N multiport interferometers.

© 1996 Optical Society of America

History
Original Manuscript: August 14, 1995
Published: February 15, 1996

Citation
Gregor Weihs, Michael Reck, Harald Weinfurter, and Anton Zeilinger, "All-fiber three-path Mach–Zehnder interferometer," Opt. Lett. 21, 302-304 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-4-302


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References

  1. M. Reck, A. Zeilinger, H. Bernstein, P. BertaniPhys. Rev. Lett. 73, 58 (1994). [CrossRef] [PubMed]
  2. P. D. Townsend, J. G. Rarity, P. R. TapsterElectron. Lett. 29, 634 (1993);P. R. Tapster, J. G. Rarity, P. C. M. OwensPhys. Rev. Lett. 73, 1923 (1994). [CrossRef]
  3. P. HariharanOptical Interferometry (Academic, San Diego, Calif., 1985).
  4. 3 × 3 couplers have been used for the demodulation of orthogonal interferometer signals in fiber gyros [Ref. 7 and J. H. JaJ. Mod. Opt. 42, 117 (1995)]and some other sensor applications [R. FuestTech. Messen 58152 (1991);O. B. WrightOpt. Lett. 16, 56 (1991)]. [CrossRef]
  5. K. Mattle, M. Michler, H. Weinfurter, A. Zeilinger, M. ZukowskiAppl. Phys. B 60, S111 (1995).
  6. A. Zeilinger, M. Zukowski, M. A. Horne, H. J. Bernstein, D. M. Greenbergerin Proceedings of the Adriatico Workshop on Quantum Interferometry,F. De Martini, G. Denardo, A. Zeilinger, eds. (World Scientific, Singapore, 1993), p. 159 ; M. Reck, A. Zeilingerin Proceedings of the Adriatico Workshop on Quantum Interferometry, F. De Martini, G. Denardo, A. Zeilinger, eds. (World Scientific, Singapore, 1993), p. 170.
  7. S. K. SheemJ. Appl. Phys. 52, 3865 (1981). [CrossRef]
  8. R. Ulrich, S. C. Rashleigh, W. EickhoffOpt. Lett. 5, 273 (1980). [CrossRef] [PubMed]
  9. R. M. A. Azzam, N. M. BasharaEllipsometry and Polarized Light (North-Holland, Amsterdam, 1977).

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