US 2024/0154388 A1 · EXTERNAL CAVITY LASER AND TUNING METHOD THEREFOR

Abstract

An external cavity laser and a tuning method therefor are provided. The external cavity laser includes a gain chip, and a tunable reflector. The tunable reflector includes a main waveguide, a beam splitter, a first branch waveguide, a first photonic crystal modulator, a second branch waveguide, and a second photonic crystal modulator. The beam splitter is configured to equally split the optical signal transmitted by the main waveguide into a first optical signal and a second optical signal and is configured to transmit the first optical signal to a first branch waveguide and the second optical signal to a second branch waveguide. A first photonic crystal modulator is configured to tune the first optical signal transmitted by the first branch waveguide. A second photonic crystal modulator is configured to tune the second optical signal transmitted by the second branch waveguide.

Claims20

Dependent claims

An external cavity laser, characterized in that, the external cavity laser comprises a gain chip, and a tunable reflector coupled with the gain chip;

wherein the tunable reflector includes:
a main waveguide coupled to the gain chip and configured to receive an optical signal transmitted by the gain chip;
a beam splitter coupled to the main waveguide and configured to equally split the optical signal transmitted by the main waveguide into a first optical signal and a second optical signal;
a first branch waveguide coupled to the beam splitter and configured to receive the first optical signal;
a first photonic crystal modulator arranged beside the first branch waveguide and configured to tune the first optical signal transmitted by the first branch waveguide;
a second branch waveguide coupled to the beam splitter and configured to receive the second optical signal;
and
a second photonic crystal modulator arranged beside the second branch waveguide and configured to tune the second optical signal transmitted by the second branch waveguide.

5 more elements

A tuning method for an external cavity laser, characterized in that, comprising:

a main waveguide receives an optical signal transmitted by a gain chip and transmits the optical signal to a beam splitter;
the beam splitter splits the optical signal into a first optical signal and a second optical signal, transmits the first optical signal to a first branch waveguide, and transmits the second optical signal to a second branch waveguide;
a first photonic crystal modulator tunes the first optical signal transmitted by the first branch waveguide;
and
a second photonic crystal modulator tunes the second optical signal transmitted by the second branch waveguide.

2 more elements

Dependencies are inferred from the claim text.

External cavity laser and tuning method therefor

Life of this patent

External cavity laser and tuning method therefor

Life of this patent

Abstract

Claims20