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Experimental Demonstration of Multi-Bit Optical Buffer Memory Using 1.55- \mu{\hbox {m}} Polarization Bistable Vertical-Cavity Surface-Emitting Lasers

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3 Author(s)
Katayama, T. ; Grad. Sch. of Mater. Sci., Nara Inst. of Sci. & Technol., Ikoma, Japan ; Ooi, T. ; Kawaguchi, Hitoshi

We demonstrate a novel all-optical buffer memory using 1.55-μm polarization bistable vertical-cavity surface-emitting lasers (VCSELs). A one-bit data is stored as one of two orthogonal polarization states of a VCSEL in this memory. The polarization state is transferred from the VCSEL to another VCSEL which is optically connected in cascade as a shift register. A 4-bit optical buffer memory is constructed using two sets of the shift-register memory connected in parallel. These results show the technical feasibility of multi-bit optical buffer memory.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:45 ,  Issue: 11 )