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Phase matching in birefringent fibers
1Bell Laboratories, Holmdel, New Jersey 07733, USA.
Optics Letters
|August 25, 2009
Summary
Researchers developed a new optical fiber technique for phase matching. This method uses birefringence to control the frequency shift of stimulated parametric emission over a wide range.
Area of Science:
- Optics and Photonics
- Nonlinear Optics
- Fiber Optics
Background:
- Stimulated parametric emission is a key nonlinear optical process.
- Phase matching is crucial for efficient nonlinear frequency generation.
- Single-mode optical fibers offer a compact platform for nonlinear optics.
Purpose of the Study:
- To introduce a novel technique for phase matching in optical fibers.
- To demonstrate the control of frequency shifts in stimulated parametric emission.
- To leverage birefringence for tunable nonlinear frequency generation.
Main Methods:
- Utilizing birefringence engineered into a single-mode optical fiber.
- Implementing phase matching for stimulated parametric emission.
- Controlling the magnitude of fiber birefringence.
Main Results:
- Achieved phase matching for stimulated parametric emission.
- Demonstrated wide-range tunability of frequency shifts (approx. 1000 cm(-1)).
- Established a direct correlation between birefringence magnitude and frequency shift.
Conclusions:
- Birefringence in optical fibers provides an effective method for phase matching.
- The technique allows for precise control over nonlinear frequency generation.
- This offers a versatile approach for tunable light sources in optical fibers.

