US 9,319,136 B2 · Optical dispersion compensation devices

Abstract

Optical dispersion compensation devices are provided herein that are based on one or more optical ring resonators. The degree of dispersion compensation can be selected by controlling the degree of under-coupling and by tuning physical properties of the optical ring resonators. In a first implementation, an optical ring resonator under-coupled to an optical throughput bus can be used to provide positive or negative dispersion compensation depending on tuning of the optical ring resonator, which widens the dispersion window. In a second implementation, an over-coupled optical ring resonator can be added to the optical throughput bus to provide a cascaded filter. In a third implementation optical ring resonators arranged in series between an optical input bus and an optical output bus can be used to both tune dispersion compensation and provide demultiplexing.

Claims36

Dependent claims

A device comprising:

an optical input bus configured to convey a given optical input signal having a given optical carrier frequency and a given data rate;
an optical output bus;
and,
an optical ring resonance structure comprising one or more optical ring resonators arranged between the optical input bus and the optical output bus,
physical properties and coupling of the optical ring resonance structure to the optical input bus, the optical output bus, and between the one or more optical ring resonators selected so that:
a centre of an insertion loss profile of the optical ring resonance structure is between the given optical carrier frequency and a first minimum of the given optical input signal, the insertion loss profile having a bandwidth at least about two thirds of the given data rate, so that a side band of the given optical input signal dominates an optical output signal conveyed from the optical input bus to the optical output bus;
and,
a dispersion peak of the optical ring resonance structure about aligns with the given optical carrier frequency.

5 more elements

A device comprising:

an optical input device;
an optical output device;
an optical throughput bus configured to convey a given optical input signal having a given optical carrier frequency and a given data rate from the optical input device to the optical output device;
and
an optical ring resonator coupled to the optical throughput bus, between the optical input device and the given optical input signal from the optical input bus to the optical ring resonator, the optical ring resonator configures to filter the given optical input signal from the optical input device to produce an optical output signal that is conveyed by the optical throughput bus to the optical output device, the coupling and physical properties of the optical ring resonator selected so that:
a dispersion peak of the optical ring resonator about aligns with the given optical carrier frequency;
and,
a centre of an insertion loss profile of the optical ring resonator is between the given optical carrier frequency and a first minimum of the given optical input signal, the insertion loss profile having a bandwidth at least about two thirids of the given data rate, so that a side band of the given optical input dominates the optical output signal conveyed to the optical output device.

5 more elements

A device comprising:

an optical input device;
an optical output device;
an optical throughput bus configured to convey a plurality of optical input signals of different given respective optical carrier frequencies, and each having a given respective data rate, from the optical input device to the optical output device;
and,
a plurality of pairs of optical ring resonators on the optical throughput bus, each of the plurality of pairs of optical ring resonators tuned to a different optical carrier frequency, each of the plurality of pairs of optical rinq resonators configured to filter given respective optical input signal from the optical input device to produce a respective optical output signal that is conveyed by the optical throughput bus to the optical output device, each of the plurality of pairs of optical ring resonators comprising:
a first optical ring resonator and a second optical ring resonator, each coupled to the optical throughout bus, respective coupling of each of the first optical ring resonator and the second optical ring resonator to the optical throughput bus, and respective physical properties thereof, selected so that:
a combined dispersion compensation of the first optical ring resonator and the second optical ring resonator is at a given respective dispersion value at the given respective optical carrier frequency;
respective insertion loss profiles for each of the of the first optical rinq resonator and the second optical ring resonator have respective maximum peaks on opposite sides of the given respective optical carrier frequency;
and,
a centre of a combined insertion loss profile of the first optical ring resonator and the second optical ring resonator is between the given respective optical carrier frequency and a first minimum of a given respective optical input signal, the combined insertion loss profile having a bandwidth at least about two thirds of the given respective data rate, so that a side band of the given respective optical input signal dominates the respective optical output signal conveyed along the optical throughput bus;
a centre of an insertion loss profile of the optical ring resonance structure is between the given optical carrier frequency and a first minimum of the given optical input signal, the insertion loss profile having a bandwidth at least about two thirds of the given data rate, so that a side band of the given optical input signal dominates an optical output signal conveyed from the optical input bus to the optical output bus.

8 more elements

Dependencies are inferred from the claim text.

Optical dispersion compensation devices

Life of this patent

Optical dispersion compensation devices

Life of this patent

Abstract

Claims36