Invention Grant
- Patent Title: Optical cable for sensing, methods of manufacture thereof and articles comprising the same
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Application No.: US16040950Application Date: 2018-07-20
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Publication No.: US10648876B2Publication Date: 2020-05-12
- Inventor: Robert S Dyer , Jie Li , John E Pacini , Brian Violette
- Applicant: OFS Fitel, LLC
- Applicant Address: US GA Norcross
- Assignee: OFS FITEL, LLC
- Current Assignee: OFS FITEL, LLC
- Current Assignee Address: US GA Norcross
- Agent David E. Rodrigues, Esq.
- Main IPC: G01L1/24
- IPC: G01L1/24 ; G01K11/32 ; G01D5/353 ; G01D5/26 ; G02B6/44 ; G02B6/02

Abstract:
Disclosed herein is an optical cable comprising a plurality of cable sensors helically wound around a support; and an outer jacket that is disposed on the plurality of cable sensors and surrounds the plurality of cable sensors; where each cable sensor comprises an optical fiber; where the optical fiber comprises an optical core upon which is disposed a cladding; a primary coating; a deformable material surrounding the optical fiber; and an outer tube surrounding the deformable material; where the optical fiber is of equal length to the outer tube; and where an allowable strain on the optical cable with zero stress on the optical fiber is determined by equations (1) and (2) below: ɛ = π 2 ( D + d 2 ) 2 + p 2 p - π 2 ( D - d 2 ) 2 + p 2 p = π 2 dD p 2 = 10 dD p 2 ( 1 ) ɛ × 100 = Percent elongation or contraction ; ( 2 ) where d is the amount of optical fiber clearance for free movement within the loose tube, D is an average pitch diameter of the plurality of cable sensors and p is an average pitch length of a helical turn of the plurality of cable sensors wound around the central strength member.
Public/Granted literature
- US20190033145A1 OPTICAL CABLE FOR SENSING, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME Public/Granted day:2019-01-31
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