The commercialization of the NECSEL visible extended cavity surface emitting laser is described. The laser generates a typical output power of greater than 3W with many discrete wavelengths available from ~521nm to 555nm.
In this paper, the performance of mid-link spectral inversion (MLSI)-based transmission is quantitatively compared to the performance for 'conventional' dispersion compensating fiber (DCF)-based transmission. Bit error rates (BER) are measured at optimized residual dispersion for all sixteen channels after 800km transmission in standard single mode fiber (SSMF). We show that for the MLSI-based configuration up to a decade of improvement in BER is obtained compared to the DCF based system. MLSI has the potential of lowering the cost of long haul transmission systems since instead of having multiple DCF modules per span only one spectral inverter is required for the whole transmission line. For spectral inversion, a polarization independent magnesium-oxide-doped periodically-poled lithium-niobate (MgO:PPLN) based subsystem was used.
Recent progress at Deacon Research in fabricating periodic domain structures in bulk lithium niobate using E-field poling will be presented. Periodic structures have been fabricated for converting the frequency ofnear infrared diode lasers to the visible and mid-JR regions ofthe spectrum using quasi-phase matching. The prospects for fabricating commercially viable integrated optical devices will be discussed.
Keywords: quasi-phase matching, frequency doubling, frequency mixing, optical parametric oscillation
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