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High-conversion-efficiency widely-tunable all-fiber optical parametric oscillator.

G K L Wong, S G Murdoch, R Leonhardt

|June 18, 2009

Summary

This study presents a widely tunable all-fiber optical parametric oscillator achieving high conversion efficiency. The device utilizes modulation instability in a normal dispersion regime, enabling broad wavelength tuning for various applications.

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Area of Science:

Photonics
Nonlinear Optics
Fiber Optics

Background:

Optical parametric oscillators (OPOs) are crucial for generating tunable light.
Achieving wide tunability and high efficiency in fiber-based OPOs remains a challenge.

Purpose of the Study:

To develop a high-conversion-efficiency, widely tunable all-fiber optical parametric oscillator.
To explore the use of modulation instability in the normal dispersion regime for OPO applications.

Main Methods:

Utilized a 40 m dispersion-shifted fiber in a synchronously pumped ring cavity.
Leveraged modulation instability near the fiber's zero-dispersion wavelength.
Tuned the pump wavelength to achieve continuous sideband tuning.

Main Results:

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Demonstrated continuous sideband tuning from 1300 to 1500 nm and 1600 to 1860 nm.
Achieved internal conversion efficiencies of up to 40%.
Pump wavelength was tuned between 1532 and 1556 nm.

Conclusions:

The developed all-fiber OPO offers high conversion efficiency and wide tunability.
Modulation instability in the normal dispersion regime is an effective mechanism for fiber OPOs.
This technology has potential for applications requiring tunable light sources.