Method and apparatus for identifying an optical transmission medium
First Claim
1. A method for identifying an optical transmission medium out of a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section, comprising the steps of:
- exciting a particular optical transmission medium to be identified by means of a polarized light;
applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to be identified at said identification section to modulate said polarized light; and
identifying said particular optical transmission medium based on the deviation of the polarized plane of said polarized light.
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Abstract
A technique for identifying an optical transmission medium from a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section by first exciting a particular optical transmission media by means of a polarized light, next applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to modulate the polarized light and then identifying the particular optical transmission medium based on the deviation of the polarized plane of the polarized light.
34 Citations
8 Claims
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1. A method for identifying an optical transmission medium out of a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section, comprising the steps of:
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exciting a particular optical transmission medium to be identified by means of a polarized light; applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to be identified at said identification section to modulate said polarized light; and identifying said particular optical transmission medium based on the deviation of the polarized plane of said polarized light. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for identifying a single-mode-type optical transmission medium comprising:
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a transmitting/receiving station provided with a light source to be used for exciting said optical transmission medium by the polarized light; a light-receiving section with a variable polarization plane for receiving the polarized light transmitted through the optical transmission medium; and means for externally applying an electromagnetic or mechanical action to the optical transmission medium at a longitudinally intermediate portion of said optical transmission medium.
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Specification