Far Radiation Field Emitted from an Optical Fiber and Its Application to Holography

Toshiaki SUHARA; Hiroshi NISHIHARA; Jiro KOYAMA

Far Radiation Field Emitted from an Optical Fiber and Its Application to Holography

Toshiaki SUHARA, Hiroshi NISHIHARA, Jiro KOYAMA

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The light emitted from the exit end of an optical fiber can be used as the reference wave in recording a hologram and/or the illuminating wave in reconstructing it. The fundamental problems associated with such an application have been investigated. First, the radiation characteristics of a step-index fiber was analyzed and a simple scalar description, suitable for the holography application, of the far radiation field was derived. It was found that the wavefront of the radiation field is identical with that of a spherical wave radiating from the center of the fiber end. The rough estimation for the size of the far field pattern was given and the orthogonality property of the radiation field was proved. Then the wavefront reconstructing characteristics of the hologram were discussed. The resolution capability of the system was determined by using the point spread function. A reduction coefficient concept has been introduced to describe the effects of the reference and illuminating wavefronts on the diffraction efficiency. It was deduced that recording with a spherical reference wave and illuminating with light derived from a fiber result in negligible reduction of the efficiency. The feasibility of the method was proved experimentally and some theoretical predictions were also confirmed.

Publication: IEICE TRANSACTIONS on transactions Vol.E60-E No.10 pp.533-540

Publication Date: 1977/10/25

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Type of Manuscript: PAPER

Category: Optical and Quantum Electronics

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Toshiaki SUHARA
Hiroshi NISHIHARA
Jiro KOYAMA

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Toshiaki SUHARA, Hiroshi NISHIHARA, Jiro KOYAMA, "Far Radiation Field Emitted from an Optical Fiber and Its Application to Holography" in IEICE TRANSACTIONS on transactions, vol. E60-E, no. 10, pp. 533-540, October 1977, doi: .
Abstract: The light emitted from the exit end of an optical fiber can be used as the reference wave in recording a hologram and/or the illuminating wave in reconstructing it. The fundamental problems associated with such an application have been investigated. First, the radiation characteristics of a step-index fiber was analyzed and a simple scalar description, suitable for the holography application, of the far radiation field was derived. It was found that the wavefront of the radiation field is identical with that of a spherical wave radiating from the center of the fiber end. The rough estimation for the size of the far field pattern was given and the orthogonality property of the radiation field was proved. Then the wavefront reconstructing characteristics of the hologram were discussed. The resolution capability of the system was determined by using the point spread function. A reduction coefficient concept has been introduced to describe the effects of the reference and illuminating wavefronts on the diffraction efficiency. It was deduced that recording with a spherical reference wave and illuminating with light derived from a fiber result in negligible reduction of the efficiency. The feasibility of the method was proved experimentally and some theoretical predictions were also confirmed.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e60-e_10_533/_p

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@ARTICLE{e60-e_10_533,
author={Toshiaki SUHARA, Hiroshi NISHIHARA, Jiro KOYAMA, },
journal={IEICE TRANSACTIONS on transactions},
title={Far Radiation Field Emitted from an Optical Fiber and Its Application to Holography},
year={1977},
volume={E60-E},
number={10},
pages={533-540},
abstract={The light emitted from the exit end of an optical fiber can be used as the reference wave in recording a hologram and/or the illuminating wave in reconstructing it. The fundamental problems associated with such an application have been investigated. First, the radiation characteristics of a step-index fiber was analyzed and a simple scalar description, suitable for the holography application, of the far radiation field was derived. It was found that the wavefront of the radiation field is identical with that of a spherical wave radiating from the center of the fiber end. The rough estimation for the size of the far field pattern was given and the orthogonality property of the radiation field was proved. Then the wavefront reconstructing characteristics of the hologram were discussed. The resolution capability of the system was determined by using the point spread function. A reduction coefficient concept has been introduced to describe the effects of the reference and illuminating wavefronts on the diffraction efficiency. It was deduced that recording with a spherical reference wave and illuminating with light derived from a fiber result in negligible reduction of the efficiency. The feasibility of the method was proved experimentally and some theoretical predictions were also confirmed.},
keywords={},
doi={},
ISSN={},
month={October},}

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TY - JOUR
TI - Far Radiation Field Emitted from an Optical Fiber and Its Application to Holography
T2 - IEICE TRANSACTIONS on transactions
SP - 533
EP - 540
AU - Toshiaki SUHARA
AU - Hiroshi NISHIHARA
AU - Jiro KOYAMA
PY - 1977
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E60-E
IS - 10
JA - IEICE TRANSACTIONS on transactions
Y1 - October 1977
AB - The light emitted from the exit end of an optical fiber can be used as the reference wave in recording a hologram and/or the illuminating wave in reconstructing it. The fundamental problems associated with such an application have been investigated. First, the radiation characteristics of a step-index fiber was analyzed and a simple scalar description, suitable for the holography application, of the far radiation field was derived. It was found that the wavefront of the radiation field is identical with that of a spherical wave radiating from the center of the fiber end. The rough estimation for the size of the far field pattern was given and the orthogonality property of the radiation field was proved. Then the wavefront reconstructing characteristics of the hologram were discussed. The resolution capability of the system was determined by using the point spread function. A reduction coefficient concept has been introduced to describe the effects of the reference and illuminating wavefronts on the diffraction efficiency. It was deduced that recording with a spherical reference wave and illuminating with light derived from a fiber result in negligible reduction of the efficiency. The feasibility of the method was proved experimentally and some theoretical predictions were also confirmed.
ER -