Method And System For A Distributed Optical Transmitter With Local Domain Splitting

a distributed optical transmitter and local domain technology, applied in the field of semiconductor photonics, can solve the problems of cable bulk penalties, large power requirements, and complex structure, and achieve the effects of small improvement in reach, limited scalability, and limited scalability

Active Publication Date: 2018-04-19
CISCO TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enhances signal integrity and scalability by reducing power consumption and cable bulk, achieving improved reach and bandwidth with immunity to supply mismatch and jitter interactions.

Problems solved by technology

They can be mitigated to some extent with equalization, coding, and shielding, but these techniques require considerable power, complexity, and cable bulk penalties while offering only modest improvements in reach and very limited scalability.

Method used

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  • Method And System For A Distributed Optical Transmitter With Local Domain Splitting
  • Method And System For A Distributed Optical Transmitter With Local Domain Splitting
  • Method And System For A Distributed Optical Transmitter With Local Domain Splitting

Examples

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Embodiment Construction

[0015]Certain aspects of the disclosure may be found in a method and system for a distributed optical transmitter with local domain splitting. Exemplary aspects of the disclosure may comprise in an optical modulator integrated in a silicon photonics chip: receiving one or more electrical signals, communicating the one or more electrical signals to domain splitters along a length of waveguides of the optical modulator utilizing one or more delay lines, generating electrical signals in at least two voltage domains utilizing the domain splitters, modulating received optical signals in the waveguides of the optical modulator by driving diodes with the electrical signals generated in the at least two voltage domains, and generating a modulated output signal through interference of the modulated optical signal in the waveguides of the optical modulator. The one or more delay lines may comprise one delay element per domain splitter. The one or more delay lines may comprise a delay element ...

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Abstract

Methods and systems for a distributed optical transmitter with local domain splitting is disclosed and may include, in an optical modulator integrated in a silicon photonics chip: receiving electrical signals, communicating the electrical signals to domain splitters along a length of waveguides of the optical modulator utilizing one or more delay lines, generating electrical signals in voltage domains utilizing the domain splitters, modulating received optical signals in the waveguides of the optical modulator by driving diodes with the electrical signals generated in the voltage domains, and generating a modulated output signal through interference of the modulated optical signal in the waveguides of the optical modulator. The delay lines may comprise one delay element per domain splitter, or may comprise a delay element per domain splitter for a first subset of the domain splitters and more than one delay element per domain splitter for a second subset of the domain splitters.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS / INCORPORATION BY REFERENCE[0001]This application claims priority to and the benefit of U.S. Provisional Application 62 / 125,291 filed on Jan. 16, 2015. This application also makes reference to Ser. No. 14 / 922,916 filed on Oct. 25, 2016. Each of the above-referenced applications is hereby incorporated herein by reference in its entirety.FIELD[0002]Certain embodiments of the disclosure relate to semiconductor photonics. More specifically, certain embodiments of the disclosure relate to a method and system for a distributed optical transmitter with local domain splitting.BACKGROUND[0003]As data networks scale to meet ever-increasing bandwidth requirements, the shortcomings of copper data channels are becoming apparent. Signal attenuation and crosstalk due to radiated electromagnetic energy are the main impediments encountered by designers of such systems. They can be mitigated to some extent with equalization, coding, and shielding, but these tech...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H04B10/516
CPCH04B10/516H04B10/5055H04B10/524H04B10/541G02F1/2257
InventorWELCH, BRIANXU, KEVIN
OwnerCISCO TECH INC