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    • 6. 发明申请
    • Integrated optical isolator using multi-mode interference structure
    • 集成光隔离器采用多模干涉结构
    • US20050094923A1
    • 2005-05-05
    • US10955980
    • 2004-09-30
    • Young-Il KimTae-Hoon YoonSeok LeeDeok-Ha WooSun-Ho KimHi-Jung KimGwan-Su LeeSung-Kyu KimMin-Chul ParkChang-Wan Son
    • Young-Il KimTae-Hoon YoonSeok LeeDeok-Ha WooSun-Ho KimHi-Jung KimGwan-Su LeeSung-Kyu KimMin-Chul ParkChang-Wan Son
    • G02B6/12G02B6/28G02B27/28G02F1/095
    • G02F1/0955G02B6/2813G02F2001/212G02F2001/217
    • The invention relates to a fabrication of an integrated optical isolator using a Multi-Mode Interference (MMI) structure and a cladding layer comprising magneto-optical material, which remove needless reflection generated in the course of light propagation and make short length integration possible. Thus, the invention uses nonreciprocal phase shift effect that optical characteristics are altered according to the direction of light propagation. In order to fabricate a light waveguide optical isolator, an input light should be separated into two light waveguides having the same power. That is, for the purpose of reducing the length of optical isolator device, the waveguide length needed to separate an input light into two light waveguides should be shortened. Since the light waveguide length of MMI structure is much shorter than the length of Mach-Zehnder light waveguide for separating an input light into two waveguides, the length of optical isolator device using MMI structure can be reduced. Moreover, since MMI structure exhibits big permissible error in fabrication, the invention has the advantage that it is simple to fabricate the device.
    • 本发明涉及使用多模干涉(MMI)结构的集成光隔离器的制造和包括磁光材料的覆层,其消除了在光传播过程中产生的不必要的反射并且使短长度集成成为可能。 因此,本发明使用不可逆相移效应,光学特性根据光传播的方向而改变。 为了制造光波导光隔离器,输入光应该分成具有相同功率的两个光波导。 也就是说,为了减小光隔离器的长度,应该缩短将输入光分成两个光波导所需的波导长度。 由于MMI结构的光波导长度比用于将输入光分离为两个波导的马赫 - 曾德尔光波导的长度短得多,所以可以减少使用MMI结构的光隔离器装置的长度。 此外,由于MMI结构在制造中表现出大的允许误差,所以本发明的优点在于制造器件是简单的。