Proximion Fiber Systems Ab

Proximon Fiber Optics Ab

Anders Henriksson

Bengt Sahlgren

Mikael Bergman

Raoul Stubbe

Simon Sandgren

Adel Asseh

Fredrik Jonsson

Staffan Karlsson

Ulf Öhlander

Ulf Olin

The present invention relates to a device, method, array and use of the device for optical coupling. The device comprises first and second optical waveguides () extending longitudinally with cores () adapted to guide optical radiation (), first resonator means, laterally surrounding the first waveguide, comprising first and second resonator members (), and second resonator means, laterally surrounding the second waveguide, comprising third and fourth resonator members (). The invention is characterized in that first and second deflector means () are adapted to couple radiation propagating in the respectiv first and second waveguides with common radiation modes (), which modes are defined by adjustable geometrical and material properties of the device, so as to obtain wavelength selective coupling of radiation guided by the first and second waveguides, provided the resonator means are tuned to the same resonance wavelength.

Wavelength selective device

The invention relates to methods and arrangements for channel balancing of a wavelength division multiplexed optical signal. Channel balancing according to the invention is performed by using a resonator that provides a selection region in which a selected channel has a substantially increased poser density relative to channels out of resonance. The selected channel is attenuated a desired amount, i.e. a desired amount of power is removed therefrom, by adjusting the properties of the selection region. In a preferred embodiment, attenuation is achieved by adjusting the selection region such that destructive interference is obtained for the selected channel in a fiber carrying tile multiplexed optical signal.

Channel balancing of a wavelength division multiplexed optical signal

The invention is a spectrally selective optical coupler with a new geometry and a new principle of action. An optical coupler according to the invention includes an optical waveguide and an external resonator. In the waveguide, there is provided a deflector that is operative to deflect light of a predetermined wavelength into the external resonator. Coupling is enhanced by the deflected wavelength being resonant in the external resonator.

Optical coupler with a new geometry

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Hässelby, Sweden

Anders Henriksson