Fiber optic coupler exhibiting low nonadiabatic loss

Details Fiber optic coupler exhibiting low nonadiabatic loss Fiber optic coupler exhibiting low nonadiabatic loss

G - Physics

02

B

G02B 6/26 (2006.01) G02B 6/02 (2006.01) G02B 6/28 (2006.01)

Patent

CA 2145717

A fiber optic coupler comprising a plurality of single- mode optical fibers, each of which is tapered to form a small diameter sections that extends in contiguous relationship with the small diameter sections of the other fibers to form a coupling region. Each of the fibers has a core surrounded by a cladding of refractive index lower than that of the core. At least one of the fibers has a refractive index pedestal of refractive index ni between said core and cladding, wherein n1>ni>n2, n1 and n2 being the refractive indices of the core and cladding, respectively.

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