18573520. COHERENT OPTICAL RECEIVER simplified abstract (Mitsubishi Electric Corporation)

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COHERENT OPTICAL RECEIVER

Organization Name

Mitsubishi Electric Corporation

Inventor(s)

GWILLERM Froc of RENNES Cedex 7 (FR)

COHERENT OPTICAL RECEIVER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18573520 titled 'COHERENT OPTICAL RECEIVER

The coherent optical receiver described in the patent application includes a local oscillator, a polarization-diversity actuator, and a 2x2 coupler.

  • The local oscillator enhances the amplitude-shift keying modulated optical signal.
  • The polarization-diversity actuator modifies the optical signal output by the local oscillator.
  • The 2x2 coupler couples the optical signal output by the actuator with a modulated optical signal from a coherent optical transmitter.
  • A controlling unit performs domain-switching and phase-refining procedures for control of the polarization-diversity actuator.

Potential Applications:

  • Telecommunications industry for high-speed data transmission.
  • Optical networking for improved signal processing.
  • Fiber optic communication systems for enhanced signal reception.

Problems Solved:

  • Improves signal quality in coherent optical communication systems.
  • Enhances the performance of optical receivers in high-speed data transmission.
  • Provides better control over polarization diversity for signal optimization.

Benefits:

  • Increased data transmission speeds.
  • Enhanced signal clarity and quality.
  • Improved overall performance of optical communication systems.

Commercial Applications:

  • Optical networking equipment manufacturers.
  • Telecommunication companies.
  • Research institutions focusing on optical communication technologies.

Questions about the technology: 1. How does the local oscillator impact the modulation of the optical signal? 2. What specific procedures does the controlling unit perform for polarization-diversity actuator control?


Original Abstract Submitted

A coherent optical receiver comprises a local oscillator, a polarization-diversity actuator configured for modifying an optical signal output by the local oscillator and a 2×2 coupler for coupling the optical signal output by the polarization-diversity actuator and a modulated optical signal received from a coherent optical transmitter. The local oscillator thus provides a boosting effect to the amplitude-shift keying modulated optical signal. The coherent optical receiver comprises a controlling unit performing a domain-switching procedure acting on ellipticity main axis orientation and/or ellipticity phase shift for coarse control of the polarization-diversity actuator, and a phase-refining procedure acting on a controlled error signal injected in the phase of the optical signal output by the polarization-diversity actuator for fine control of the polarization-diversity actuator.

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