US 2003/0228091 A1 · Wavelength selector to be used in wavelength divison multiplexing networks

Abstract

A wavelength selector to be used in WDM networks is provided. The wavelength selector is composed of a circulator, an arrayed waveguide grating (AWG), which is used for wavelength demultiplexing and multiplexing part, and an electro-optical (EO) switching part. The input light after the circulator is demultiplexed through the AWG part and each channel of the demultiplexed lights is modulated and reflected through the EO switching part which is formed as Michelson type interferometer with mirror parts returning the light to the AWG. The modulated and reflected light is multiplexed through the AWG and the direction is changed to the output through the circulator.

Claims6

Dependent claims

A wavelength selector comprising:

an input;
a wavelength demultiplexing part coupled to the input, demultiplexing input light or distributing the lights as the wavelengths, and outputting a plurality of output light of each wavelength;
and
an optical switching part including an electro-optic (EO) switch which transmits the plurality of output light from the wavelength demultiplexing part;
and
a mirror that reflects light transmitted from the EO switch to the opposite direction and selects the light of predetermined wavelengths by Michelson-type interferometry using the interference between the couple of light reflected from the couple of mirror.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/292,313Filed 12 Nov 2002

Priority

KR 2002-315915 Jun 2002

Published

11 Dec 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

G02B 6/12019
Comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides: characterised by the optical interconnection to or…
H04Q 11/0005
Using optical switching: switch and router aspects
G02B 2006/121
Constructional arrangements: channel; buried or the like
G02F 1/065
Based on electro-optical organic material: in an optical waveguide structure

Wavelength selector to be used in wavelength divison multiplexing networks

Life of this patent

Wavelength selector to be used in wavelength divison multiplexing networks

Life of this patent

Abstract

Claims6