[12] Patent
[11] Patent No.:GC0009228  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/140678
Date of the Decision to Grant the Patent:02/Dec/2018

[21] Application No.:GC 2010-17247

[22] Filing Date:7/12/2010

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
9/12/2009
12/634.296

[72] Inventors:1- Daniel Homa،2- Brooks Childers

[73] Owner: Baker Hughes Incorporated, 2929 Allen Parkway Suite 2100, Texas 77019 , Huston, USA

[74] Agent: Saba & Co. T.M.P

  

 

  

[51]IPC:
Int. Cl.: E21B 47/12; G01V 8/16; G02B 6/02 (2006.01)

[56] Cited Documents:

-US 2002/081086 Al (VARNER WAYNE F [US]) 27 June 2002
-US 4 447 125 A (LAZAY PAUL D [US] ET AL) 8 May 1984
-JP H09 243848 A (SUMITOMO ELECTRIC INDUSTRIES) 19 September 1997
-EP 1 107 027 Al (SUMITOMO ELECTRIC INDUSTRIES [JP]) 13 June 2001
 
Examiner: Eng. Abdallah I. AlKhatib

[54] BEND INSENSITIVE OPTICAL FIBER WITH IMPROVED HYDROGEN RESISTANCE
[57] Abstract: An optical fiber includes: a core including a photosensitive material disposed therein, the core having a first index of refraction; a depressed cladding surrounding the core and having a second index of refraction that is lower than the first index of refraction; and an outer cladding surrounding the depressed cladding and having a third index of refraction that is higher than the depressed cladding.
No. of claims: 18     No. of figures: 6


 

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