Patent ID: 7155086
Filing Date: 2006-12-26
Classification: G02F,H04Q

Abstract:
1. An optical signal processing device, comprising: an input optical waveguide; an optical splitter configured to split optical signals multiplexed on a time axis that are entered at the input optical waveguide into plural sets; an optical delay waveguide array formed by a plurality of optical delay waveguides with mutually different delay amounts in units of time-slots which are configured to delay the optical signals split by the optical splitter; an optical combiner configured to combine the optical signals delayed by the optical delay waveguide array; an output optical waveguide connected to an output port of the optical combiner; and an optical gate configured to gate the optical signals, outputted from the optical combiner or entered into the optical delay waveguide array such that parts of the optical signals of different sets which come into a prescribed time-slot region at the identical timing are extracted simultaneously at the identical timing; wherein at least one of the optical splitter, the optical delay waveguide array, the optical combiner, and the optical gate has an optical amplitude adjustment function for adjusting amplitudes of the optical signals; and wherein the optical signal processing device is a purely optical device for optically processing the optical signals multiplexed on the time axis that operates entirely in an optical region.