Apparatus, system and method for an adiabatic coupler for...

Details Apparatus, system and method for an adiabatic coupler for... Apparatus, system and method for an adiabatic coupler for...

2007-02-27

2007-02-27

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling function

C385S043000, C385S147000, C359S333000

Reexamination Certificate

active

11051742

ABSTRACT:
An improved fiber-optic communications system comprises a multi-mode waveguide carrying an optical signal, a single-mode waveguide optically coupled to and receiving the optical signal from the multi-mode waveguide and an adiabatic coupler optically coupled between the multi-mode waveguide and the single-mode waveguide. The multi-mode and single-mode waveguides may be optical fibers. The adiabatic coupler may comprise a tapered core surrounded by a cladding. Alternatively, the adiabatic coupler may comprise a core surrounded by a cladding, wherein the refractive index of at least one of the core and the cladding varies over the length of the adiabatic coupler.

REFERENCES:
patent: 6185346 (2001-02-01), Asawa et al.
patent: 6324326 (2001-11-01), Dejneka et al.

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