Device for generating a modulation of an optical signal

摘要

The invention relates to a device generating a modulation of an optical signal characterized in that the device comprises a first ring resonator modulator including a first waveguide, a first ring waveguide being optically coupled to the first waveguide, and a first control device, and a second ring resonator modulator including a second waveguide, a second ring waveguide being optically coupled to the second waveguide and being independent of the first ring, and a second control device, the device having at least one characteristic that influences the chirp introduced by the device, the characteristics of the device being selected in a manner so as to minimize the absolute value of the chirp introduced by the device.

主权项

1. A device generating a modulation of an optical signal wherein the device comprises:
a first ring resonator modulator comprising:
a first waveguide having an input, and an output,a first ring waveguide, referred to as first ring, the first ring being optically coupled to the first waveguide and having a first effective index, anda first control device capable of modulating the first effective index of the first ring in accordance with a first control law,wherein the first ring resonator modulator has a first transfer function defined as a ratio between an optical field at an output of the first ring resonator modulator and an incident optical field and presents first parameters influencing the first transfer function, and a second ring resonator modulator comprising:
a second waveguide having an input and an output,a second ring waveguide, referred to as second ring, the second ring being optically coupled to the second waveguide having a second effective index, anda second control device capable of modulating the second effective index of the second ring in accordance with a second control law,
wherein the input of the second waveguide being connected to the output of the first waveguide,wherein the second ring being independent from the first ring,wherein the second ring resonator modulator has a second transfer function defined as a ratio between an optical field at an output of the second ring resonator modulator and an incident optical field and presents second parameters influencing the second transfer function, wherein the device having at least one characteristic that influences a chirp introduced by the device, the characteristics of the device being chosen so as to minimise an absolute value of the chirp introduced by the device, and
wherein the characteristics influencing the chirp introduced by the device are the first parameters and the second parameters.