Study on a high-speed optical spectrum control circuit using PLZT waveguides

点击翻译按钮获取中文摘要

The PLZT-based monolithic tunable wavelength filter with multiple channel phase shifters was designed and fabricated. Crosstalks of the filter were -14 dB for TE polarized light and -13 dB for TM polarized light, respectively. The filter 3-dB bandwidth and the response time were 110 GHz and less than 40 ns for both polarizations. The operation method of the spectrum control circuit was studied. The variable bandwidth filtering and arbitrary delay operation were successfully demonstrated with the spectrum control circuit. The silica-based arrayed-waveguide gratings and the PLZT-based optical switches were hybrid integrated and it showed the fast wavelength selective operation with a switching time of less than 13 ns.