INVESTIGATION OF OPTICAL CLOCK DIVISION AND DEMULTIPLEXING BASED ON A COMMERCIAL LITHIUM NIOBATE-INTENSITY MODULATOR

摘要

We demonstrate and investigate a simple technique to realize multichannel optical clock division by using a commercial lithium niobate-intensity modulator (LN-IM). Optical clock division is achieved by controlling the driving and dc bias voltage of the LN-IM. 20- to 10-GHz optical clock division experiments of both single and double channel are implemented to verify the performance of the proposed optical clock divider. The phase noise of the extracted 10-GHz optical clock is less than 95 dBc/Hz. The other function of this technique, demultiplexing of optical time division multiplexing (OTDM) signal is also demonstrated experimentally. The 20-Gb/s PRBS OTDM signal is successfully demultiplexed to two 10 Gb/s with high quality.