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Integrated optical gyroscope using active long-range surface plasmon-polariton waveguide resonator.

Tong Zhang1, Guang Qian1, Yang-Yang Wang1

  • 11] School of Electronic Science and Engineering, Southeast University, and Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, Nanjing, 210096, People's Republic of China [2] Suzhou Key Laboratory of Metal Nano-Optoelectronic Technology, Suzhou Research Institute of Southeast University, Suzhou, 215123, People's Republic of China.

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We developed a novel integrated resonant optical gyroscope using active long-range surface plasmon-polariton (LRSPP) waveguides. This advanced sensor significantly reduces noise and drift for high-sensitivity rotation sensing in navigation systems.

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Area of Science:

  • Photonics and Optical Engineering
  • Inertial Navigation Systems
  • Sensor Technology

Background:

  • High-sensitivity rotation sensors are crucial for inertial navigation.
  • Conventional optical gyroscopes face challenges with noise and polarization errors.
  • Integrated optical devices offer potential for miniaturization and improved performance.

Purpose of the Study:

  • To present a novel integrated resonant optical gyroscope concept.
  • To utilize active long-range surface plasmon-polariton (LRSPP) waveguide resonators.
  • To overcome limitations of conventional optical gyroscopes.

Main Methods:

  • Constructing an integrated resonant optical gyroscope using active LRSPP waveguide resonators.
  • Employing a doped gain medium in the LRSPP waveguide for loss compensation.
  • Utilizing electro-optical multiplexing of the LRSPP waveguide's metal layer for noise suppression.

Main Results:

  • Achieved a limited sensitivity of approximately 10⁻⁴ deg/h.
  • Demonstrated a maximum zero drift four orders of magnitude lower than conventional single-mode waveguides.
  • Observed significant reduction in polarization error due to LRSPP waveguide's single-polarization property.

Conclusions:

  • The proposed active LRSPP waveguide resonator offers a promising platform for high-performance optical gyroscopes.
  • This approach significantly mitigates key error sources like pump noise, polarization error, and reciprocal noises.
  • The developed gyroscope concept shows potential for advanced inertial navigation systems.