Dynamically Reconfigurable on-Chip Polarimeters Based on Nanoantenna Enabled Polarization Dependent Optoelectronic...

Area of Science:

• Photonics and Optoelectronics
• Sensor Technology
• Infrared Imaging

Background:

• On-chip polarization detectors offer compact, filterless architectures.
• Current detectors lack dynamic adjustment of polarization-dependent photoresponses, limiting intelligent applications.

Purpose of the Study:

• To propose a dynamically reconfigurable polarimetry device for intelligent on-chip polarization sensing.
• To enable electrostatic configuration for diverse sensing modes and enhanced performance.

Main Methods:

• In-sensor differentiation of two self-powered photoresponses with orthogonal polarization dependences.
• Electrostatic configuration for ultrahigh polarization extinction ratio (PER) mode, Stokes parameter direct sensing, and background suppression.
• Demonstration across the near-to-long-wavelength infrared range.

Main Results:

• Achieved ultrahigh PER mode (tending to infinity).
• Enabled direct Stokes parameter (S1, S2) sensing with high accuracy (RMSE = 1.5%, 2.0%).
• Demonstrated singular enhancement of target-background polarization contrast and high polarization angle sensitivity (0.51 mA·W⁻¹·degree⁻¹).

Conclusions:

• The proposed dynamically reconfigurable polarimetry scheme overcomes limitations of static on-chip detectors.
• This technology promises a significant advancement for next-generation intelligent on-chip polarimeters.
• The device's versatility and performance across the infrared spectrum open new avenues in optical sensing.