Interferometric tunable optical filter

Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic

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385 27, G02B 610, G02F 1035

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053513177

ABSTRACT:
An interferometric tunable optical filter selects a predetermined wavelength or wavelengths from a wavelength division multiplexed signal. The optical filter splits an input signal into a plurality of waveguide branches. In each branch, the amplitude and phase of the signal can be individually controlled. The signals are then recombined. The resulting interference gives a wavelength dependent transmission spectrum that can be adjusted as desired.

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