04838643 is referenced by 170 patents and cites 6 patents.

A double-clad single mode optical fiber with a depressed inner cladding exhibits increased resistance to attenuation increases resulting from small radius bends and lower attenuation sensitivity to temperature changes when the mode field diameter is less than 7 um and the ratio of the radius of the inner cladding to the radius of the core is at least 6.5 to one.

Title
Single mode bend insensitive fiber for use in fiber optic guidance applications
Application Number
7/171979
Publication Number
4838643
Application Date
March 23, 1988
Publication Date
June 13, 1989
Inventor
James H Bowen
Salem
VA, US
Roger Charlton
Roanoke
VA, US
Leslie B Hodges
Roanoke
VA, US
Agent
Peter C Van Der Sluys
Assignee
Alcatel NA
NC, US
IPC
G02B 6/22
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