Acousto optic tunable filter （AOTF） is the main device to provide wavelength routing in the future’s all optical network. It has special multi channel operation function and can simultaneously select multi-wavelength and tuning quickly. To implement the selective function of tuning wavelength

AOTF requires high qulity RF power resources . This article introduces a type of RF power source that can implement tuning and multi channel operation simultaneously. In our circuit

SAW resonator is used to make out the oscillator. The oscillator has enough frequency tuning range and enough stability. Its instant stable degree can reach 10 -8 . The single channel’s output power can reach 1W that meets the needs of the AOTF’s operation.