DIRECTLY MODULATED LASER WITH INTEGRATED OPTICAL FILTER
First Claim
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1. An integrated optical source comprising:
- a substrate;
a Direct Modulated Laser (DML) supported by the substrate; and
an active current-tunable filter supported by the substrate and located proximate the DML, where an input to the filter comprises a modulated chirped optical data signal, and a corresponding output of the filter comprises at least one of an amplitude modulated optical data signal, a phase modulated optical data signal, or an optical data signal that incorporates both amplitude and phase modulation, the filter being tunable by a bias current applied thereto.
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Abstract
An integrated optical source includes a Directly Modulated Laser (DML) and a filter which is positioned with the DML on a common substrate. The filter is configured to receive an input signal in the form of a modulated chirped optical signal. The filter is further configured to provide an output optical signal in the form of an amplitude and/or phase modulated optical signal, optimized for long-distance transmission in optical fiber.
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Citations
26 Claims
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1. An integrated optical source comprising:
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a substrate; a Direct Modulated Laser (DML) supported by the substrate; and an active current-tunable filter supported by the substrate and located proximate the DML, where an input to the filter comprises a modulated chirped optical data signal, and a corresponding output of the filter comprises at least one of an amplitude modulated optical data signal, a phase modulated optical data signal, or an optical data signal that incorporates both amplitude and phase modulation, the filter being tunable by a bias current applied thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 26)
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10. (canceled)
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12. A transmitter optical subassembly (TOSA), comprising:
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a substrate; a DML supported by the substrate; an active current-tunable filter supported by the substrate and located proximate the DML, where an input to the filter comprises a modulated chirped optical data signal, and a corresponding output of the filter comprises at least one of an amplitude modulation optical data signal, a phase modulation optical data signal, or an optical data signal that incorporates both amplitude and phase modulation, the filter being tunable by a bias current applied thereto; a transmit node coupled to the filter and configured to pass an optical signal to an optical fiber; and a connection node coupled to the DML and configured to receive one or more electrical signals. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An optical transceiver comprising:
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a Receiver Optical Subassembly (ROSA) configured to receive an optical signal and generate a corresponding electrical signal; a post-amplifier configured to process the electrical signal generated by the ROSA; and a Transmitter Optical Subassembly (TOSA) configured to transmit an optical signal to an optical fiber, and the TOSA comprises; a substrate; a DML supported by the substrate; and an active current-tunable filter supported by the substrate, where an input to the filter comprises a modulated chirped optical data signal, and a corresponding output of the filter comprises at least one of an amplitude modulation optical data signal, a phase modulation optical data signal, or an optical data signal that incorporates both amplitude and phase modulation, the filter being tunable by a bias current applied thereto; and a laser driver configured to provide electrical signals to the TOSA. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification