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Polarization modulation instability in photonic crystal fibers
R J Kruhlak1, G K Wong, J S Chen
1Department of Physics, University of Auckland, New Zealand. kruhly@gmail.com
Optics Letters
|April 28, 2006
Summary
Polarization modulation instability (PMI) in birefringent fibers generates orthogonally polarized sidebands. This study quantifies phase birefringence, crucial for developing novel fiber-optic amplifiers and oscillators.
Area of Science:
- Nonlinear optics
- Photonics
- Condensed matter physics
Background:
- Polarization modulation instability (PMI) is a nonlinear phenomenon in optical fibers.
- Birefringent photonic crystal fibers (PCFs) exhibit unique polarization-dependent properties.
- Understanding PMI in PCFs is key to developing advanced optical devices.
Purpose of the Study:
- To investigate PMI in birefringent PCFs in the normal dispersion regime.
- To determine the phase birefringence of the PCF.
- To explore the potential of PMI for optical amplifiers and oscillators.
Main Methods:
- Experimental observation of PMI in birefringent PCFs.
- Measurement of frequency shifts and dispersion characteristics.
- Calculation of phase birefringence from experimental data.
- Four-wave mixing experiments in normal and anomalous dispersion regimes.
Main Results:
- PMI observed in the normal dispersion regime with a 64 THz frequency shift.
- Generated sidebands were orthogonally polarized to the pump.
- Phase birefringence determined to be 5.3 x 10(-5) at 647.1 nm.
- PMI frequency shifts agreed well with predictions over a 70 THz range.
Conclusions:
- The study successfully characterized PMI in birefringent PCFs.
- Accurate determination of phase birefringence is demonstrated.
- PMI in PCFs shows potential for creating new optical amplifiers and oscillators.
