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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Experimental demonstration of microring-based optical pulse train generator.

Shang Wang¹, Hui Wu

¹Department of Electrical and Computer Engineering University of Rochester, Rochester, New York 14627, USA.

|September 22, 2011

Summary

This study demonstrates a novel microring-based optical pulse generator. The electronic-photonic integrated circuit (EPIC) successfully generated high-repetition-rate optical pulse trains for advanced optical arbitrary waveform generation (OAWG).

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Area of Science:

Photonics
Integrated Optics
Electronic-Photonic Integrated Circuits (EPIC)

Background:

Microring resonators offer a compact platform for manipulating optical signals.
Generating high-repetition-rate optical pulse trains is crucial for optical arbitrary waveform generation (OAWG) and ultrafast electro-optic (EO) modulation.
Existing methods for optical pulse generation face limitations in terms of repetition rate and integration.

Purpose of the Study:

To experimentally demonstrate a proof-of-concept microring-based optical pulse train generator.
To validate the functionality of electronic-photonic integrated circuits (EPIC) for OAWG and ultrafast EO modulation.
To characterize the performance of fabricated chip prototypes.

Main Methods:

Proposed a microring-based architecture coupled to a waveguide for time-interleaving trigger pulses.

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Fabricated two four-stage chip prototypes on silicon-on-insulator (SOI) substrate.

Conducted experimental testing to measure output pulse characteristics.

Main Results:

Successfully generated four sequential optical pulses from a 20-ps input trigger pulse.
Achieved constant stage delays of 55 ps and 30 ps in the two prototypes.
Demonstrated output pulse repetition rates of 18 GHz and 33 GHz.

Conclusions:

The microring-based optical pulse train generator is a viable technique for generating high-repetition-rate optical pulses.
The fabricated electronic-photonic integrated circuits (EPIC) show promise for optical arbitrary waveform generation (OAWG) and ultrafast electro-optic (EO) modulation.
This technology enables compact and efficient generation of optical pulse trains for advanced photonic applications.