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Micro fiber optical sensor

a technology of optical sensors and micro fibers, applied in the field of optical communication, can solve the problems of design, manufacturing, cost, and inability to meet the needs of customers, and achieve the effect of improving the length of the fiber, improving the service life and improving the service li

Active Publication Date: 2008-08-28
LITTON SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This configuration results in a more sensitive and cost-effective optical acoustic sensor with reduced fiber length requirements and lower stress on the fiber, enabling increased acoustic sensitivity and phase shift detection.

Problems solved by technology

Furthermore, increasing the fiber length may be impractical from a design, manufacturing, and cost perspective.

Method used

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  • Micro fiber optical sensor
  • Micro fiber optical sensor
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Examples

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Embodiment Construction

[0015]The present invention relates to optical communications and, more particularly, to art optical sensor fiber. The optical sensor fiber can be formed by drawing a multi-mode optical fiber, such as a conventional, commercially available multi-mode optical fiber. The optical sensor fiber can be a single-mode optical sensor fiber, and can have a cladding-to-core ratio that is substantially equal to a cladding-to-core ratio of the multi-mode optical fiber from which optical sensor fiber is formed. As an example, the optical sensor fiber can have a core region diameter of about 2 μm to about 8 μm and a cladding region outer diameter of about 8 μm to about 20 μm. The optical sensor fiber can be coated with a jacket material, and can be wound around a mandrel, for example, for use in an optical acoustic sensor.

[0016]FIG. 1 illustrates an example of a system 10 for forming an optical sensor fiber 12 in accordance with an aspect of the present invention. The system 10 includes an optical...

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Abstract

A method is provided for producing an optical acoustic sensor. In one embodiment, a method comprises winding a single-mode optical sensor fiber around at least one mandrel. The optical acoustic sensor fiber can comprise a core region having a diameter of about 2 μm to about 8 μm and a cladding region having an outer diameter of about 8 μm to about 20 μm. The method can also comprise interconnecting the at least one mandrel into an optical acoustic sensor.

Description

TECHNICAL FIELD[0001]The present invention relates to optical communications and, more particularly, to a micro fiber optical sensor.BACKGROUND OF THE INVENTION[0002]Optical fibers can be used in any of a variety of different communications and sensing applications. For example, optical fiber-based acoustic sensors can be used for undersea applications. An optical fiber-based acoustic sensor can be formed by winding a length of optical fiber around a mandrel, where the fiber can be up to tens of hundreds of meters long. The sensor industry typically uses a conventional reduced-cladding fiber (80 μm diameter), which is an improvement over a standard-size (125 μm) fiber. A mode field diameter can typically be in the range of 7-10 μm, so light can be concentrated within the core region of the optical fiber and possibly a layer of a few microns of the cladding adjacent to it.[0003]Most fiber-based acoustic sensors detect sound by determining a differential phase delay of light propagati...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02B6/02
CPCG01H9/004G01D5/35374G02B6/14G02B6/02052
Inventor SHAIBANI, SANANMEYER, A. DOUGLAS
Owner LITTON SYST INC