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Related Experiment Video

Updated: May 13, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Photonic arbitrary waveform generation based on crossed frequency to time mapping.

H-Y Jiang¹, L-S Yan, Y-F Sun

¹State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

|March 14, 2013

Summary

This study introduces crossed frequency-to-time-mapping (CFTTM) for microwave photonic arbitrary waveform generation. The technique allows flexible control over pulse shapes, enabling the creation of various waveforms like UWB and comb pulses.

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Area of Science:

Microwave photonics
Optical signal processing
Waveform generation

Background:

Arbitrary waveform generation is crucial for advanced communication and sensing systems.
Existing methods for microwave photonic arbitrary waveform generation face limitations in flexibility and tunability.
Intersymbol interference is typically an undesirable effect in signal processing.

Purpose of the Study:

To propose and demonstrate a novel method for microwave photonic arbitrary waveform generation using incoherent frequency-to-time-mapping (FTTM).
To investigate the capability of the proposed crossed FTTM (CFTTM) technique to define and tune pulse shapes.
To experimentally validate the generation of diverse pulse shapes including UWB, triangular, rectangle, and comb signals.

Main Methods:

Implementation of a microwave photonic system utilizing incoherent FTTM.
Employing a spectrum shaper to control the symbol shape (spectral characteristics).
Adjusting the degree of intersymbol interference to manipulate the output waveform.

Main Results:

Successful generation of arbitrary microwave photonic waveforms.
Demonstration of precise control over pulse shaping through spectral engineering and intersymbol interference.
Experimental realization of UWB, triangular, rectangle, comb, and user-defined pulse shapes.

Conclusions:

The crossed FTTM technique offers a flexible and tunable approach for microwave photonic arbitrary waveform generation.
This method effectively overcomes limitations of traditional techniques by allowing independent control of spectral and temporal characteristics.
The experimental results confirm the versatility of CFTTM for generating a wide range of pulse shapes for various applications.