Method And System For Encoding Multi-Level Pulse Amplitude Modulated Signals Using Integrated Optoelectronic Devices
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Abstract
Methods and systems for encoding multi-level pulse amplitude modulated signals using integrated optoelectronics are disclosed and may include generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more electrical input signals. The optical modulator may include optical modulator elements coupled in series and configured into groups. The number of optical modular elements and groups may configure the number of levels in the multi-level amplitude modulated optical signal. Unit drivers may be coupled to each of the groups. The electrical input signals may be synchronized before communicating them to the unit drivers. Phase addition may be synchronized utilizing one or more electrical delay lines. The optical modulator may be integrated on a single substrate, which may include one of: silicon, gallium arsenide, germanium, indium gallium arsenide, polymers, or indium phosphide. The optical modulator may include a Mach-Zehnder interferometer or one or more ring modulators.
21 Citations
63 Claims
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1-27. -27. (canceled)
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28. A method for processing signals, the method comprising:
generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more of a plurality of electrical input signals, wherein; said optical modulator comprises a plurality of optical modulator elements coupled in series and configured into a plurality of groups; a number of said optical modular elements and a number of said plurality of groups configure a number of levels in said multi-level amplitude modulated optical signal; unit drivers are coupled to each of said plurality of groups of said optical modulator elements; and said plurality of electrical input signals are synchronized before being communicated to said unit drivers. - View Dependent Claims (29, 30, 31, 32, 34, 35)
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33. The method according to claim 33, wherein said single substrate comprise one of:
- silicon, gallium arsenide, germanium, indium gallium arsenide, indium phosphide, or polymer-based materials.
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36. A system for processing signals, the system comprising:
an optical modulator comprising one or more optical and one or more electrical components, said optical modulator being operable to generate a multi-level, amplitude-modulated optical signal, wherein; said optical modulator is driven by two or more of a plurality of electrical input signals; said optical modulator comprises a plurality of optical modulator elements coupled in series and configured into a plurality of groups; a number of said optical modular elements and a number of said plurality of groups configure a number of levels in said multi-level amplitude modulated optical signal; and said optical modulator is operable to; couple unit drivers to each of said plurality of groups of said optical modulator elements; and synchronize said plurality of electrical input signals before communicating said signals to said unit drivers. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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44. A method for processing signals, the method comprising:
generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more of a plurality of electrical input signals, wherein; said optical modulator comprises a plurality of optical modulator elements coupled in series; and a number of said optical modular elements configure a number of levels in said multi-level amplitude modulated optical signal; and two or more of said plurality of electrical input signals are selected utilizing one or more multiplexers. - View Dependent Claims (45)
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46. A system for processing signals, the system comprising:
an optical modulator comprising one or more optical and one or more electrical components, said optical modulator being operable to generate a multi-level, amplitude-modulated optical signal, wherein; said optical modulator is driven by two or more of a plurality of electrical input signals; said optical modulator comprises a plurality of optical modulator elements coupled in series; a number of said optical modular elements configure a number of levels in said multi-level amplitude modulated optical signal; and said optical modulator is operable to select two or more of said plurality of electrical input signals utilizing one or more multiplexers. - View Dependent Claims (47)
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48. A method for processing signals, the method comprising:
generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more of a plurality of electrical input signals, wherein; said optical modulator comprises a plurality of optical modulator sections coupled in series; a number and length of said optical modular sections configure a number of levels in said multi-level amplitude modulated optical signal; one or more unit drivers are coupled to each of said optical modulator sections; and said plurality of electrical input signals are synchronized before being communicated to said unit drivers. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55)
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56. A system for processing signals, the system comprising:
an optical modulator comprising one or more optical and one or more electrical components, said optical modulator being operable to generate a multi-level, amplitude-modulated optical signal, wherein; said optical modulator is driven by two or more of a plurality of electrical input signals; said optical modulator comprises a plurality of optical modulator sections coupled in series; a number and length of said optical modular sections configure a number of levels in said multi-level amplitude modulated optical signal; and said optical modulator is operable to; couple one or more unit drivers to each of said optical modular sections; and synchronize said plurality of electrical input signals before communicating said signals to said unit drivers. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63)
Specification