System and method for m-ary phase-shifting keying modulation

A system for performing m-ary phase-shift keying modulation, the system comprising:

• a signal source, the signal source being configured to generate at least a first signal and a second signal, the first signal and the second signal being characterized by first signal strength level;
• a signal attenuator being configure to generate a third signal by attenuating the second signal, the second signal being characterized by a second signal strength level, the second signal strength level being at approximate 50% of the first signal strength level;
• a voltage adjustment component being configured to provide a fourth signal by coupling the first signal by a first bias voltage and to provide a fifth signal by coupling the third signal by a second bias voltage;
• a voltage combining component being configured to provide a sixth signal by combing the fourth signal and the fifth signal;
• a light source being configured to providing a light;
• a modulation component being configured to provide a modulated light signal by performing amplitude modulation on the light, the modulation being associated with at least the sixth signal;
• and
• an optical amplifier being configured to perform phase-shift keying modulation on the modulated light signal and to output an m-ary phase-key modulated optical signal, the optical amplifier being characterized by an amplitude/phase characteristic.

A method for performing m-ary phase-shift keying modulation, the method comprising:

• providing a first signal and a second signal, the first signal being characterized by a first signal voltage, the second signal being characterized by a second signal voltage, the first signal voltage being approximately half of the second signal voltage;
• providing a third signal, the third signal being combination of the first signal and the second signal;
• generating a light signal by performing amplitude modulation on a light using at least the third signal to generate sending the light signal to an optical amplifier, the amplifier being characterized by a known amplitude/phase characteristic;
• and
• performing phase-shift keying modulating by the optical amplifier, the phase-shift modulating being a based on an amplitude of the light signal and the known amplitude/phase characteristics of the optical amplifier.

A system for performing m-ary phase-shift keying modulation, the system comprising:

• a signal source, the signal source being configured to generate at least a first signal and a second signal, the first signal and the second signal being characterized by first signal strength level;
• a signal attenuator being configured to generate a third signal by attenuating the second signal, the second signal being characterized by a second signal strength level, the second signal strength level being at approximate 50% of the first signal strength level;
• a voltage adjustment component being configured to provide a fourth signal by coupling the first signal by a first bias voltage and to provide a fifth signal by coupling the third signal by a second bias voltage;
• a voltage combining component being configured to provide a sixth signal by combing the fourth signal and the fifth signal;
• a signal amplifier that is configured to amplify the sixth signal at a amplification level, the amplification level being associated with the modulation component. a light source being configured to providing a light;
• a modulation component being configured to provide a modulated light signal by performing amplitude modulation on the light, the modulation being associated at with at least the sixth signal;
• an optical attenuator being configured to attenuate the modulated light signal;
• and
• an optical amplifier being configured to perform phase-shift keying modulation on the modulated light signal and to output an m-ary phase-key modulated optical signal, the optical amplifier being characterized by an amplitude/phase characteristic.

A method for performing m-ary phase-shift keying modulation, the system comprising:

• providing a plurality of signals, the plurality of signals including at least a first signal, the plurality of signals being associated with an amplitude modulation;
• providing a modulated light signal by performing amplitude modulation on the light, the modulation being associated at with at least the first signal;
• and
• performing phase-shift keying modulation on the amplitude-modulated light signal using an optical amplifier, the optical amplifier being characterized by an amplitude/phase characteristic and a phase-shift keying function.