Gigantic dispersive wave emission from dual concentric core microstructured fiber.

Area of Science:

• Nonlinear optics
• Fiber optics

Background:

• Efficient optical frequency conversion is crucial for developing new light sources.
• Microstructured fibers offer unique dispersion properties for nonlinear phenomena.

Purpose of the Study:

• To achieve efficient frequency conversion from a 1064 nm pump to a dispersive wave (DW) around 1535 nm.
• To investigate the role of fiber dispersion in resonant energy transfer.

Main Methods:

• Utilized a microstructured double core fiber with a 4 m span.
• Employed a 1064 nm subnanosecond pulse as the pump source.
• Analyzed output power and spectral characteristics.

Main Results:

• Achieved efficient frequency conversion to a DW centered at 1535 nm.
• Observed nearly 50% power transfer from the pump to the DW.
• Demonstrated resonant energy transfer due to a normal dispersion peak around 1515 nm.

Conclusions:

• The microstructured double core fiber enables highly efficient DW generation.
• Resonant energy transfer from solitons to DWs is a key mechanism for high conversion efficiency.
• This technique shows promise for advanced optical light source development.