Method and system for generating short pulse signals
First Claim
1. A short pulse generation system, comprising:
- a fiber chain having an input for receiving an optical signal having a plurality of optical pulses, said fiber chain being nonlinear with respect to said optical signal, said fiber chain including;
a first normal fiber segment having a relatively small chromatic parameter;
a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of said first normal fiber segment;
a second abnormal fiber segment having a relatively small chromatic parameter coupled to an output of said first abnormal fiber segment; and
a filter stage coupled to an output of said fiber chain, said filter stage having a transparent wavelength selected to regenerate said optical signal, whereby a short pulse signal is generated when said optical signal is coupled to said input.
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Abstract
A short pulse generation system and method of generating a short pulse signal are provided. The system includes a fiber chain having an input for receiving an optical signal having a plurality of optical pulses. The fiber chain is nonlinear with respect to the optical signal and includes a first normal fiber segment having a relatively small chromatic parameter, a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of the first normal fiber segment, and a second abnormal fiber segment having a relatively small chromatic parameter coupled to an out of the first abnormal fiber segment. The system includes a filter stage coupled to an output of the fiber chain and that has a transparent wavelength selected to regenerate the signal. A short pulse signal is produced when the optical signal is coupled to the input.
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Citations
25 Claims
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1. A short pulse generation system, comprising:
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a fiber chain having an input for receiving an optical signal having a plurality of optical pulses, said fiber chain being nonlinear with respect to said optical signal, said fiber chain including;
a first normal fiber segment having a relatively small chromatic parameter;
a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of said first normal fiber segment;
a second abnormal fiber segment having a relatively small chromatic parameter coupled to an output of said first abnormal fiber segment; and
a filter stage coupled to an output of said fiber chain, said filter stage having a transparent wavelength selected to regenerate said optical signal, whereby a short pulse signal is generated when said optical signal is coupled to said input. - View Dependent Claims (2, 3, 4, 5)
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6. A method of generating an optical signal having short pulses, comprising the steps of:
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providing an optical signal having a plurality of optical pulses having a pulse width to a first normal fiber segment having a relatively small chromatic parameter, wherein the optical spectrum of said optical signal is broadened;
compressing the pulse width of said pulses of said optical signal with a second fiber segment having a relatively large chromatic parameter;
then, compressing the pulse width of said pulses of said optical signal with a third fiber segment having a relatively small chromatic parameter, wherein each of said segments is nonlinear with respect to said optical signal; and
filtering said optical signal to regenerate said pulses of said optical signal after said third fiber segment, whereby an optical signal having short pulses is generated. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An optical transmission system, comprising:
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a plurality of short pulse generation systems, each system providing a short pulse optical signal, each system comprising;
a fiber chain having an input for receiving an optical signal having a plurality of optical pulses, said fiber chain being nonlinear with respect to said optical signal, said fiber chain including;
a first normal fiber segment having a relatively small chromatic parameter;
a first abnormal fiber segment having a relatively large chromatic parameter coupled to receive said optical signal from said first normal fiber segment;
a second abnormal fiber segment having a relatively small chromatic parameter coupled to receive said optical signal from said first abnormal fiber segment; and
a filter stage coupled to receive said optical signal from said second abnormal fiber segment, said filter stage having a transparent wavelength selected to regenerate said optical signal, whereby a short pulse signal is generated when said optical signal is coupled to said input;
a plurality of modulators, said plurality of modulators encoding said optical signals with data; and
a multiplexer, said multiplexer coupled to multiplex said short pulse optical signals into a higher-speed signal for transmission. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A short pulse generation system, comprising:
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a fiber chain having an input for receiving an optical signal having a plurality of optical pulses, said fiber chain being nonlinear with respect to said optical signal, said fiber chain including;
a normal single-mode fiber segment having a relatively small chromatic parameter;
an abnormal standard single-mode fiber segment having a relatively large chromatic parameter coupled to an output of said normal single-mode fiber segment;
an abnormal single-mode fiber segment having a relatively small chromatic parameter coupled to an output of said abnormal standard single-mode fiber;
an optical amplifier coupled before said fiber chain; and
a filter stage coupled to an output of said fiber chain, said filter stage having a transparent wavelength selected to regenerate said optical signal. - View Dependent Claims (23, 24, 25)
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Specification