SYNCHRONOUS OPTICAL SIGNAL GENERATING DEVICE AND SYNCHRONOUS OPTICAL SIGNAL GENERATING METHOD
First Claim
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1. A synchronous optical signal generating device, comprising:
- optical phase detecting means for comparing a phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal;
shaping means for shaping the phase error signal; and
voltage controlled optical signal generating means for generating an optical beat signal based on the shaped phase error signal and outputting the optical beat signal while feeding the optical beat signal back to the phase detecting means, whereinthe voltage controlled optical signal generating means includes;
voltage controlled electrical signal generating means for generating an electrical signal corresponding to the shaped phase error signal and outputting the electrical signal;
optical comb generating means for generating an optical comb signal having optical spectrum lines with frequency intervals corresponding to the electrical signal generated by the voltage controlled electrical signal generating means;
2-mode selecting means for selecting optical signals having optical spectrum lines of two different wavelengths from the optical comb signal; and
2-mode multiplexing means for multiplexing the selected optical signals having two different wavelengths and outputting the multiplexed signal as the optical beat signal while feeding the optical beat signal back to the phase detecting means.
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Abstract
A synchronous optical signal generation device includes: an optical phase detector that compares the phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal; a shaping mechanism that shapes the phase error signal; and a voltage controlled optical signal generator that generates an optical beat signal based on the shaped phase error signal and that outputs the optical beat signal while feeding the optical beat signal back to the phase detector.
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Citations
16 Claims
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1. A synchronous optical signal generating device, comprising:
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optical phase detecting means for comparing a phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal; shaping means for shaping the phase error signal; and voltage controlled optical signal generating means for generating an optical beat signal based on the shaped phase error signal and outputting the optical beat signal while feeding the optical beat signal back to the phase detecting means, wherein the voltage controlled optical signal generating means includes; voltage controlled electrical signal generating means for generating an electrical signal corresponding to the shaped phase error signal and outputting the electrical signal; optical comb generating means for generating an optical comb signal having optical spectrum lines with frequency intervals corresponding to the electrical signal generated by the voltage controlled electrical signal generating means; 2-mode selecting means for selecting optical signals having optical spectrum lines of two different wavelengths from the optical comb signal; and 2-mode multiplexing means for multiplexing the selected optical signals having two different wavelengths and outputting the multiplexed signal as the optical beat signal while feeding the optical beat signal back to the phase detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A generating method of a synchronous optical signal, comprising:
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a phase detecting step of comparing a phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal; a shaping step of shaping the phase error signal; and a voltage controlled optical signal generating step of generating an optical beat signal based on the shaped phase error signal and outputting the optical beat signal while feeding the optical beat signal back to the phase detecting step, wherein the voltage controlled optical signal generating step includes; a voltage controlled electrical signal generating step of generating an electrical signal corresponding to the shaped phase error signal and outputting the electrical signal; an optical comb generating step of generating an optical comb signal having optical spectrum lines with frequency intervals corresponding to the electrical signal generated by the voltage controlled electrical signal generating step; a 2-mode selecting step of selecting optical signals having optical spectrum lines of two different wavelengths from the optical comb signal; and a 2-mode multiplexing step of multiplexing the selected optical signals having two different wavelengths and outputting the multiplexed signal as the optical beat signal while feeding the optical beat signal back to the phase detecting step.
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Specification