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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Linearized analog photonic links based on a dual-parallel polarization modulator
Menghao Huang1, Jianbin Fu, Shilong Pan
1Microwave Photonics Research Laboratory, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Optics Letters
|June 5, 2012
Summary
This study introduces a linearized analog photonic link (APL) using a dual-parallel polarization modulator (DPPolM). The novel APL significantly reduces nonlinear distortion and enhances dynamic range for improved signal integrity.
Area of Science:
- Photonics
- Optical Communications
- Nonlinear Optics
Background:
- Analog photonic links (APLs) are crucial for high-frequency signal transmission.
- Third-order nonlinear distortion limits the performance of conventional APLs.
- Existing APL designs often lack compactness and power efficiency.
Purpose of the Study:
- To propose and experimentally validate a linearized analog photonic link (APL).
- To mitigate third-order nonlinear distortion in APLs.
- To enhance the spurious-free dynamic range (SFDR) of APLs.
Main Methods:
- Development of an analog photonic link (APL) utilizing an integratable electro-optic dual-parallel polarization modulator (DPPolM).
- Theoretical analysis to identify conditions for eliminating third-order nonlinear distortion.
- Experimental validation using a proof-of-concept setup with careful adjustment of a polarization controller.
Main Results:
- Achieved a reduction of third-order intermodulation components by up to 40 dB.
- Demonstrated an improvement in spurious-free dynamic range (SFDR) of 15.5 dB compared to a single PolM-based link.
- The DPPolM-based APL requires only one laser, one modulator, and one photodetector, ensuring simplicity and power efficiency.
Conclusions:
- The proposed dual-parallel polarization modulator (DPPolM)-based analog photonic link (APL) effectively suppresses third-order nonlinear distortion.
- This novel APL architecture offers significant improvements in SFDR and maintains a simple, compact, and power-efficient design.
- The findings pave the way for advanced optical communication systems with enhanced linearity and dynamic range.
