| The research works of this dissertation are supported by the National Basic Research Program of China (973 Project, Grant 2003CB314906), the National 863 High Technology Project of China (2007AA03Z447), the Foundation for the Key Program of Ministry of Education of China (Grant 104046) and "111 Project" (B07005).Microstructured fibers (MFs) show us an amazing and promising application potentiality for their novel properties, such as flexible and controllable dispersion property, controllable nonlinearity, and high birefringence. In recent years, the design, fabrication and application of MFs have become hot research tropics. With the conception of all-optical telecommunication, the all-optical technology based 3-R regeneration, optical information processing, wavelength conversion, pattern conversion and dispersion compensation have become core technologies of all-optical telecommunication. The content for this dissertation focuses on how to realize the key technologies in the all-optical telecommunication system by applying unique properties of MFs. The superiority of MFs based implementation scheme in the high integration results from the controllable sturcture of micron order of MFs.In this dissertation, MF-related all-optical functional devices are studied both theoretically and experimentally. The main contents and achievements are as follows.1. Comprehensive research on the properties of MFs, including loss, dispersion, polarization, nonlinearity, coupling and fusion to signal mode fiber, and the classification and analysis methods of MFs.2. Extensive study on all-optical regeneration. The 2R all-optical regeneration scheme based on SPM effect of MFs. High-quality regeneration (amplitude jitter reduction and extinction ratio enhancement) of a 10Gb/s optical data stream is achieved. The extinction ratio is enhanced from 3.0dB to 12.0dB, and the amplitude jitter was reduced from 0.8 to 0.05. One-to-multi wavelength conversion was achieved based on the SPM in MFs too, and the 10Gb/s optical data is conversed to four wavelengths between 1555nm and 1570nm simultaneously. At the same time, two clock recovery technologies based respectively on probabilistic computation and photo introduced refractive index change effect which can overcome large stochastic time jitter were put forword.3. NOLM structure all optical switching based on MFs is discussed. The extinction ratio of this all optical switching is 21.3dB, and the response rate is 10 GB/s the insert loss is 4.7dB.4. The feasibility of applying the supercontinuum (SC) of MFs into DWDM light source is verified. Clock pulses can be filterred out at different wavelength between 1525nm to 1575nm from the SC. At 1562nm, the changing process from clock pulse to CW light was observed after adjusting filter bandwidth.5. The wavelength conversion between two CW lights based on the FWM in MFs is achieved and discussed. The conversion bandwidth is 1558nm-1574nm, and the conversion efficiency is-19.8dB--28.7dB. The wavelength conversion and pattern conversion is completed simultaneously based on the FWM in MF. A 10 GB/s NRZ signal at 1550nm was conversed to an RZ signal at 1561nm. The wavelength utilization limitation of WDM+OTDM multiplexing scheme is derived theoretically.6. The all-optical quaternary-binary conversion based on SPM effect of MFs is put forward theoretically. A 10Gb/s quaternary optical signal was conversed to a 20Gb/s binary signal with extinction ratio of-3.2dB.7. The wideband dispersion compensation scheme based on MFs is completed with colleague cooperation. The dispersion compensating MF is carried out the dispersion measurement experiment within the range of 120nm (1520nm-1640nm), meanwhile is the dispersion compensation experiment of multi-points light signal within the range of 44nm (1523nm-1567nm).
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