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Kyu Hyeon Jeong,Kyong Hon Kim,Seoung Hun Lee,Min Hee Lee,Byeung-Soo Yoo,Shore, K.A. IEEE 2008 Photonics Technology Letters Vol.20 No.10
<P>We report the first experimental invetigation of the polarization-mode switching dynamics and injection-wavelength-dependent polarization-mode bistability of a 1.5-m wavelength single-mode vertical-cavity surface-emitting lasers (VCSELs) under external laser beam injection. An injection beam with polarization orthogonal to that of the stand-alone VCSEL caused polarization-mode instability and switching of the VCSEL output. By varying the optical injection detuning for fixed injection power observation was made of a novel form of polarization bistability which will have applications in a new type of all-optical flip-flop and signal processing scheme.</P>