Reducing crosstalk in free-space optical communications
First Claim
Patent Images
1. An apparatus, comprising:
- an optical transmitter that includes a modulator, a dispersion adjustment module, and an optical amplifier, the transmitter being configured to transmit optical pulses over a free-space optical communication channel; and
wherein the modulator is configured to produce an optical carrier that is amplitude and/or phase modulated by data; and
wherein the dispersion adjustment module is connected between the modulator and the amplifier and is configured to substantially change temporal widths of optical pulses received from the modulator by changing dispersions of the received optical pulses.
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Abstract
An optical transmitter includes a modulator, a dispersion adjustment module, and an optical amplifier. The optical transmitter is configured to transmit optical pulses over a free-space optical communication channel. The modulator is configured to produce an optical carrier that is amplitude and/or phase modulated by data. The dispersion adjustment module is connected between the modulator and the amplifier and is configured to substantially change temporal widths of optical pulses received from the modulator by changing dispersions of the received optical pulses.
50 Citations
17 Claims
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1. An apparatus, comprising:
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an optical transmitter that includes a modulator, a dispersion adjustment module, and an optical amplifier, the transmitter being configured to transmit optical pulses over a free-space optical communication channel; and wherein the modulator is configured to produce an optical carrier that is amplitude and/or phase modulated by data; and wherein the dispersion adjustment module is connected between the modulator and the amplifier and is configured to substantially change temporal widths of optical pulses received from the modulator by changing dispersions of the received optical pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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producing a stream of optical pulses by producing a modulated optical carrier; substantially changing the dispersions of the optical pulses of the stream to produce corresponding temporally broadened optical pulses; optically amplifying the temporally broadened optical pulses to produce corresponding amplified optical pulses; and transmitting the amplified optical pulses to an optical receiver via a free-space optical communication channel. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification