Survivable target acquisition and designation system
Single mode optical fibers
Double-clad optical fiberguide
Low dispension single mode fiber
Single mode modified W-fiber
Pressure or strain sensitive optical fiber Patent #: 4770492
ApplicationNo. 07/171979 filed on 03/23/1988
US Classes:385/127, Concentric244/3.12, Trailing wire385/134, ACCESSORIES385/147MISCELLANEOUS
ExaminersPrimary: Lee, John D.
Attorney, Agent or Firm
International ClassesG02B 6/44 (20060101)
G02B 6/036 (20060101)
G02B 6/02 (20060101)
AbstractA 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.