发明名称 Integrated optic read/write head for optical data storage incorporating second harmonic generator, electro-optic tracking error actuator, and electro-optic modulator
摘要 An integrated electro-optic waveguide device has a substrate, an optically transparent lower buffer layer positioned atop the substrate, an optically transparent nonlinear optic (NLO) organic poled polymer waveguide positioned atop the lower buffer layer, and a GaAs laser diode optically coupled to the waveguide. The NLO material has a higher refractive index than the buffer layer. A ridge waveguide section forms an extended resonator cavity for the laser diode and combines a modulation function and an in-cavity quasi-phase matched second harmonic generation function. A grating coupled ridge-to-planar waveguide section combines a beam expansion function, a TE-TM conversion function, and a beam turning function. A planar surface prism electrode section provides electro-optic waveguide beam deflection. A dual linear grating coupler section performs the output/input coupling. Beam turning is accomplished by a planar waveguide mirror section. An electro-optic ridge waveguide Mach-Zehnder interferometer wavefront sensor section generates TES and FES signals.
申请公布号 US5276745(A) 申请公布日期 1994.01.04
申请号 US19920961576 申请日期 1992.10.15
申请人 EASTMAN KODAK COMPANY 发明人 REVELLI, JR., JOSEPH F.
分类号 G02B6/122;G02B6/124;G02B6/34;G02F1/37;G11B7/12;(IPC1-7):G02B6/12 主分类号 G02B6/122
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