Experimental investigation on a software synchronous optical sampling technique based on periodically poled lithium niobate

Lin Zuo Lin Zuo, Aiying Yang Aiying Yang, Junsen Lai Junsen Lai, Yunan Sun Yunan Sun
2012 Chinese Optics Letters (COL)  
A software synchronous optical sampling system is constructed based on sum frequency generation (SFG) in periodically poled lithium niobate (PPLN). Five gigahertz of a non-return-to-zero (NRZ) data signal is sampled by sampling pulse with the repetition frequency of 29.31 MHz. The power of the SFG light is set at −23 dBm, and an eye diagram is successfully recovered. A band-pass filter is added before the sampling pulse is subjected to erbium-doped fiber amplifier to reduce gain competition and ensure a high power level of SFG.
doi:10.3788/col201210.100701 fatcat:j54dpp2pqzcd3f5gf25w64g4za