3 ) the new types of photonic devices based on sampled grating : multiple wavelength laser, wavelength multiplexer / demultiplexer, reconfigurable optical add / drop multiplexer, optical fiber sensor, and multiple channels dispersion compensator 3)取样光栅构成的新型光子学器件:多波长激光器、波分复用解复用器、重构型光分插复用器、光纤传感器及多信道色散补偿器在光纤通信中的应用前景。