简述了单片集成光波导波分器的原理和制备工艺。并用同一根光纤传输的两波长激光束(632.8 nm，785.5 nm)测试了该器件的波分特性。实验中成功地观察到同光纤传输的两个不同波长的激光信号在波分器的输出端分离。

The principle and the fabricating technology of the monolithic integrated waveguide demultiplexer are discribed in brief.The demultiplexer has been tested with two laser beams(632.8 nm,785.5 nm) traveled in a fiber.In the experiment,the two laser beams of different wavelengths,which are separated at the output end of demultiplexer, are observed successfully.