Abstract: We fabricated a reverse amplification circuit as the modulation circuit of electro-optical modulator using an organic field\|effect transistors(OFET),whose active material is CuPc, and measured the modulation results of the light signal. The experimental results show that at the low-frequency, OFET can realize the amplification function. It can supply drive and modulation voltage to electro-optical crystal, hence realizing the modulation of the laser light. At the same time, we analyze the characteristic of OFET by the experimental results.

Key words: organic semiconductor, organic field-effect transistors, electro-optical modulation, reverse amplification circuit