单模光纤与光子晶体光纤混合光纤耦合器研究

In this paper, a coupler of single mode fiber with photonic crystal fiber is fabricated with a new method called Auto-deposition Fused Side-adhere Coupling. A model for coupler of side-polished single mode fiber with side-polished photonic crystal fiber is established which proves it feasible to make such a coupler practically. The ration of coupler can be changed from 0 to 90%. In this Paper measure the wavelength dependent loss, polarization dependent loss and the effect of temperature and humidity of the coupler. In the range of 1520nm~1620nm, the wavelength dependent loss of the through port is 0.3dB and of the coupled port is 5dB. The polarization dependent loss of through port is 0.25dB and 0.31dB at the wavelength of 1310nm and 1550nm, and polarization dependent loss of coupled port is 1.46dB and 1.75dB. When temperature changes from 10℃ to 80℃ and humidity changes from 10% to 70%, coupling ratio changes about 7% to 16%. It can be concluded that a steady coupler of single mode fiber with photonic crystal fiber can be made with the Auto-deposition Fused Side-adhere Coupling method, which can give a reference method and lay an experimental foundation for the fabrication of photonic crystal fiber coupler.