Related Experiment Video
Updated: Jul 31, 2025
05:57
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
Published on: April 1, 2020
8.1K
Optimized intensity-modulated type PTS-based PAPR reduction scheme for intensity-modulated direct-detection optical
Optics Express
|May 9, 2023
Summary
A new intensity-modulated Partial Transmit Sequences (IM-PTS) scheme reduces signal peak-to-average power ratio (PAPR) in intensity-modulated OFDM systems. This method lowers complexity and enhances optical fiber nonlinear effect tolerance, reducing network upgrade costs.
Area of Science:
- Optical Communications
- Signal Processing
Background:
- High peak-to-average power ratio (PAPR) is a significant challenge in optical orthogonal frequency division multiplexing (OFDM) systems.
- This drawback limits system performance and increases hardware requirements.
Purpose of the Study:
- To propose and evaluate an intensity-modulated type Partial Transmit Sequences (IM-PTS) scheme for intensity-modulated OFDM (IMDD-OFDM) systems.
- To reduce PAPR and system complexity while maintaining performance.
Main Methods:
- Developed an intensity-modulated PTS (IM-PTS) scheme ensuring real-valued time-domain signals.
- Conducted simulations to compare PAPR reduction against other PTS algorithms.
- Performed transmission experiments on a seven-core fiber IMDD-OFDM system at 100.8 Gbit/s.
Main Results:
- Simulated PAPR reduction from 14.5 dB to 9.4 dB at a 10^-4 probability.
- Experimental Error Vector Magnitude (EVM) improved from 9 to 8 at -9.4 dBm received optical power.
- The optimized IM-PTS scheme demonstrated increased tolerance to optical fiber nonlinearities and reduced hardware requirements.
Conclusions:
- The proposed IM-PTS scheme effectively mitigates high PAPR in IMDD-OFDM systems.
- Reduced complexity and enhanced nonlinear tolerance simplify network upgrades and lower costs.
- The scheme minimizes the need for replacing existing optical devices during access network evolution.
