利用周期性极化铌酸锂波导实现正交频分复用（OFDM）信号的可调谐光波长转换
Tunable optical wavelength conversion of OFDM signal using a periodically-poled lithium niobate waveguide.
作者信息
Wu Xiaoxia, Peng Wei-Ren, Arbab Vahid, Wang Jian, Willner Alan
机构信息
Dept. of Electrical Engineering - Systems, University of Southern California, Los Angeles, CA 90089, USA.
出版信息
Opt Express. 2009 May 25;17(11):9177-82. doi: 10.1364/oe.17.009177.
We experimentally demonstrate tunable optical wavelength conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with approximately-5 dB (approximately 30%) efficiency over approximately 30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after wavelength conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the wavelength converter.
我们通过实验证明，使用周期性极化铌酸锂（PPLN）波导，在约30纳米带宽上，可实现10吉比特每秒射频（RF）音调辅助正交频分复用（OFDM）信号的可调谐光波长转换，转换效率约为5分贝（约30%）。波长转换后获得的代价小于3分贝。通过改变正交幅度调制（QAM）大小和子载波数量，进一步评估了波长转换器的性能。
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