System and method for cryogenic optoelectronic data link
First Claim
1. A cryogenic optoelectronic modulator, comprising:
- at least one voltage input port, configured to receive at least one input signal having a full scale magnitude less than about 10 mV;
a pathway configured to carry the at least one input signal, which is superconducting at temperatures below 100K;
an optical carrier input port, configured to receive an optical carrier wave;
an electro-optic modulator, configured to operate at a cryogenic temperature less than about 100 K, comprising at least one layer of graphene, configured to modulate the optical carrier wave in dependence on at least the at least one input signal to produce a modulated optical carrier wave; and
a modulated optical output port, configured to transmit the modulated optical carrier wave.
1 Assignment
0 Petitions
Accused Products
Abstract
A cryogenic optoelectronic data link, comprising a sending module operating at a cryogenic temperature less than 100 K. An ultrasensitive electro-optic modulator, sensitive to input voltages of less than 10 mV, may include at least one optically active layer of graphene, which may be part of a microscale resonator, which in turn may be integrated with an optical waveguide or an optical fiber. The optoelectronic data link enables optical output of weak electrical signals from superconducting or other cryogenic electronic devices in either digital or analog form. The modulator may be integrated on the same chip as the cryogenic electrical devices. A plurality of cryogenic electrical devices may generate a plurality of electrical signals, each coupled to its own modulator. The plurality of modulators may be resonant at different frequencies, and coupled to a common optical output line to transmit a combined wavelength-division-multiplexed (WDM) optical signal.
276 Citations
29 Claims
-
1. A cryogenic optoelectronic modulator, comprising:
-
at least one voltage input port, configured to receive at least one input signal having a full scale magnitude less than about 10 mV; a pathway configured to carry the at least one input signal, which is superconducting at temperatures below 100K; an optical carrier input port, configured to receive an optical carrier wave; an electro-optic modulator, configured to operate at a cryogenic temperature less than about 100 K, comprising at least one layer of graphene, configured to modulate the optical carrier wave in dependence on at least the at least one input signal to produce a modulated optical carrier wave; and a modulated optical output port, configured to transmit the modulated optical carrier wave. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. An optical modulator, comprising:
-
at least one layer of graphene, modulated by a voltage input signal having a full scale peak amplitude of less than about 10 mV, at a temperature of less than about 100 K, and at a rate of at least 1 gigabits per second or a frequency of at least 1 GHz, the at least one layer of graphene having an optical property altered by the voltage input signal to produce a modulated optical signal from an optical signal; and at least one optical port configured to transmit the modulated optical signal. - View Dependent Claims (27)
-
-
28. An electro-optic communication method, comprising:
-
providing an optical modulation module, comprising at least one layer of graphene, configured to modulate an optical carrier input signal to cause an amplitude change of at least 0.1 dB or a phase change of at least 0.1 radians based a voltage input signal having a voltage of less than about 10 mV, to generate a modulated optical signal; and modulating an optical signal with the optical modulation module. - View Dependent Claims (29)
-
Specification