Concentric core optical fiber with multiple-mode signal transmission
Abstract
A concentric core optical fiber provides for the simultaneous but independent transmission of signals over a single optical fiber. The concentric optical fiber is constructed of a single-mode or multimode inner optical fiber defined by a core and a cladding of a lower index of refraction than the core and an outer optical fiber defined by additional cladding concentrically disposed around the cladding and of an index of refraction lower than the first mentioned cladding whereby the latter functions as the core of the outer optical fiber. By employing such an optical fiber construction with a single-mode inner core or optical fiber, highly sensitive interferometric and stable less sensitive amplitude based sensors can be placed along the same length of a concentric core optical fiber. Also, by employing the concentric core optical fiber secure telecommunications can be achieved via the inner optical fiber since an intrusion of the concentric optical fiber will first cause a variation in the light being transmitted through the outer optical fiber and this variation of light being used to trigger a suitable alarm indicative of the intrusion.
- Inventors:
-
- Lenoir City, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 870945
- Patent Number(s):
- 5627934
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- concentric; core; optical; fiber; multiple-mode; signal; transmission; provides; simultaneous; independent; signals; single; constructed; single-mode; multimode; inner; defined; cladding; index; refraction; outer; additional; concentrically; disposed; mentioned; whereby; latter; functions; employing; construction; highly; sensitive; interferometric; stable; amplitude; based; sensors; placed; length; secure; telecommunications; achieved; via; intrusion; variation; light; transmitted; trigger; suitable; alarm; indicative; signal transmission; inner core; optical fiber; concentrically disposed; single optical; core optical; concentric core; single optic; /385/
Citation Formats
Muhs, Jeffrey D. Concentric core optical fiber with multiple-mode signal transmission. United States: N. p., 1997.
Web.
Muhs, Jeffrey D. Concentric core optical fiber with multiple-mode signal transmission. United States.
Muhs, Jeffrey D. Wed .
"Concentric core optical fiber with multiple-mode signal transmission". United States. https://www.osti.gov/servlets/purl/870945.
@article{osti_870945,
title = {Concentric core optical fiber with multiple-mode signal transmission},
author = {Muhs, Jeffrey D},
abstractNote = {A concentric core optical fiber provides for the simultaneous but independent transmission of signals over a single optical fiber. The concentric optical fiber is constructed of a single-mode or multimode inner optical fiber defined by a core and a cladding of a lower index of refraction than the core and an outer optical fiber defined by additional cladding concentrically disposed around the cladding and of an index of refraction lower than the first mentioned cladding whereby the latter functions as the core of the outer optical fiber. By employing such an optical fiber construction with a single-mode inner core or optical fiber, highly sensitive interferometric and stable less sensitive amplitude based sensors can be placed along the same length of a concentric core optical fiber. Also, by employing the concentric core optical fiber secure telecommunications can be achieved via the inner optical fiber since an intrusion of the concentric optical fiber will first cause a variation in the light being transmitted through the outer optical fiber and this variation of light being used to trigger a suitable alarm indicative of the intrusion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}