This paper is a brief introduction to the technologies of 2005 OFC-NFOEC (Optical Fiber Communication Conference & National Fiber Optics Engineers Conference) and others
including system and devices field. Such contents are considered as promising and characteristic or interesting by author. In the system field
we give emphasis to the FTTH
ASON and IP optical network. In the device field
we give emphasis to the optical switch
wavelength adjustable devices and PLC. This paper is for Chinese engineer reader
all the introductions are rough
those who wish to get detailed information may read the references which are denoted in the end of paragraph.