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Applied Optics

Applied Optics


  • Vol. 38, Iss. 16 — Jun. 1, 1999
  • pp: 3508–3515

Three-dimensional phase imaging with a scanning optical-fiber interferometer

Julian N. Walford, Keith A. Nugent, Ann Roberts, and Robert E. Scholten  »View Author Affiliations

Applied Optics, Vol. 38, Issue 16, pp. 3508-3515 (1999)

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We describe a quantitative method for measuring the phase of a propagating wave field in three dimensions by use of a scanning optical-fiber interferometer. Because phase modulation in the reference arm is exploited, this technique is insensitive to large variations in the intensity of the field being studied and is therefore highly suitable for measurement of phase within spatially confined optical beams. It uses only a single detector and is not reliant on lock-in electronics. The technique is applied to the measurement of the near field of a cleaved optical fiber and is shown to produce results in good agreement with theory.

© 1999 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.5060) Fiber optics and optical communications : Phase modulation
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(180.3170) Microscopy : Interference microscopy
(180.5810) Microscopy : Scanning microscopy

Original Manuscript: September 17, 1998
Revised Manuscript: March 10, 1999
Published: June 1, 1999

Julian N. Walford, Keith A. Nugent, Ann Roberts, and Robert E. Scholten, "Three-dimensional phase imaging with a scanning optical-fiber interferometer," Appl. Opt. 38, 3508-3515 (1999)

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