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Optomechanical nonlinearity in dual-nanoweb structure suspended inside capillary fiber
A Butsch1, M S Kang, T G Euser
1Max Planck Institute for the Science of Light, Guenther-Scharowsky-Strasse 1, 91058 Erlangen, Germany. anna.butsch@mpl.mpg.de
Physical Review Letters
|December 11, 2012
Summary
A new nanostructured optical fiber with dual ultrathin glass membranes exhibits exceptionally high optomechanical nonlinearity. This fiber enables significant light-induced refractive index changes, surpassing the Kerr effect for advanced optical applications.
Area of Science:
- Photonics and Nanotechnology
- Optomechanics
Background:
- Optical fibers are crucial for light transmission.
- Optomechanical effects in nanostructures offer unique light-matter interactions.
Purpose of the Study:
- To present a novel nanostructured optical fiber with enhanced optomechanical nonlinearity.
- To demonstrate significant light-induced refractive index changes.
Main Methods:
- Fabrication of a dual-web nanostructured optical fiber.
- Utilizing a pump-probe technique in an interferometric setup.
- Measuring optomechanically induced refractive index changes.
Main Results:
- The dual-web fiber displays extremely high and optically broadband optomechanical nonlinearity.
- Optomechanically induced refractive index changes were observed to be over 10^4 times larger than the Kerr effect.
- Experimental results align well with theoretical predictions.
Conclusions:
- The novel dual-web fiber integrates micro-optomechanical sensitivity with optical fiber versatility.
- This technology holds potential for advancements in nonlinear optics, optical metrology, and sensing.
