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    • 7. 发明授权
    • Coplanar integrated optical waveguide electro-optical modulator
    • 共平面集成光波导电光调制器
    • US06760493B2
    • 2004-07-06
    • US10185772
    • 2002-06-28
    • Valerio PruneriAntonino Nespola
    • Valerio PruneriAntonino Nespola
    • H01S300
    • G02F1/225G02F2201/126
    • A coplanar integrated optical waveguide electro-optical modulator comprises a substrate (1) of an electro-optic material, at least two optical waveguides (41, 42) integrated in the substrate in correspondence of a surface (71) thereof, and an electrode system (80, 90, 100; 80, 90, 900; 12-15; 120, 130, 140, 150, 160, 170) arranged on the surface for applying a modulating electric field to the waveguides suitable for causing a modulation of a refractive index of the two waveguides in a device modulation region (50). The waveguides are formed, for at least a section thereof (411, 421) in the device modulation region, in respective substrate regions (61, 62) which have electro-optic coefficients of opposite sign along an axis transversal to the waveguide sections, so that a modulating electric field of same direction and orientation in the waveguide sections causes refractive index modulations of opposite sign in the waveguide sections. Chirp-free coplanar waveguide modulators and single-drive double coplanar strip modulators can thus be obtained.
    • 共面的一体化光波导电光调制器包括电光材料的基片(1),至少两个与其表面(71)对应的基片中的光波导(41,42)和电极系 (80,90,100; 80,90,900; 12-15; 120,130,140,​​150,160,170),其布置在所述表面上,用于向所述波导施加调制电场,所述调制电场适于引起折射 器件调制区域(50)中的两个波导的折射率。 在器件调制区域的至少一部分(411,421)上,在沿着与波导部分横向的轴线具有相反符号的电光系数的各个衬底区域(61,62)中形成波导,因此 在波导部分中相同方向和取向的调制电场在波导部分中导致相反符号的折射率调制。 因此可以获得无啁啾共面波导调制器和单驱动双共面条带调制器。