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    • 2. 发明申请
    • Optical interferometer device
    • 光学干涉仪装置
    • US20060188193A1
    • 2006-08-24
    • US11235650
    • 2005-09-26
    • Maurizio Lenzi
    • Maurizio Lenzi
    • G02B6/12
    • G02B6/12028G02B6/12011
    • Describes is an optical interferometer device comprising an input coupler connected to at least one input waveguide, an output coupler connected to at least one output waveguide and a multiplicity of waveguide branches connected between the input coupler and the output coupler, at least two adjacent branches of this multiplicity having geometric and/or optical characteristics different from each other, so that a light signal will be transmitted through one of them with a predetermined phase shift with respect to a light signal transmitted through the other branch. At least one of the two adjacent branches comprises at least one first waveguide part having a first contrast index and at least one second waveguide part having a second contrast index greater than the first. The device has a structure that permits great versatility of design. In particular, it is possible to realize devices insensitive to temperature variations and devices of limited (reduced) encumbrance.
    • 描述的是一种光学干涉仪装置,包括连接到至少一个输入波导的输入耦合器,连接到至少一个输出波导的输出耦合器和连接在输入耦合器和输出耦合器之间的多个波导支路,至少两个相邻分支 这种多重性具有彼此不同的几何和/或光学特性,使得光信号将相对于通过另一分支传输的光信号以预定的相移传输通过其中之一。 两个相邻分支中的至少一个包括具有第一对比度指数的至少一个第一波导部分和具有大于第一对比度指数的第二对比度指数的至少一个第二波导部分。 该设备具有允许设计的多功能性的结构。 特别地,可以实现对温度变化不敏感的装置和有限(减少)产生负担的装置。
    • 6. 发明授权
    • Tunable add/drop optical device
    • 可调式分插光学装置
    • US06285810B1
    • 2001-09-04
    • US09043697
    • 1998-05-08
    • Antonio FincatoMaurizio LenziDomenico Di Mola
    • Antonio FincatoMaurizio LenziDomenico Di Mola
    • G02B628
    • G02F1/3136G02F1/0147
    • Tunable add/drop optical device for injecting or extracting (add/drop) at least a selected optical channel or carrier wavelength in or from a set of multiplexed channels or carriers of different wavelengths comprising a plurality of directional couplers (AD1 . . . AD6) and a plurality of phase-shift stages (SF1 . . . SF5) alternately connected in cascade, wherein each phase-shift stage defines a certain optical path length difference (&Dgr;L1 . . . &Dgr;L5) between two distinct optical paths of the stage. The tuning is performed modifying the refraction index of one path of said phase shift stages by means of Joule effect heating strips (L1 . . . L5) or by means of metallic field plates adapted to receive a signal suitable to modify the electric field intensity. The first two phase-shift stages of said plurality of phase-shift stages have differences of length of optical paths different from each other and in a preestablished ratio while the remaining phase-shift stages have differences of length of optical paths identical. It is thus possible to provide a device having an exceptionally flat cross response characteristic, substantially free of ripple due to an inevitable truncation of the Fourier expansion series.
    • 可调谐的分插光学装置,用于在包括多个定向耦合器(AD1,... AD6)的一组不同波长的多路复用信道或载波集合中进行至少一个选择的光信道或载波波长的加入/ 以及级联交替连接的多个相移级(SF1 ... SF5),其中每个相移级在该级的两个不同的光路之间定义一定的光程长度差(DELTAL1 ... DELTAL5)。 通过焦耳效应加热条(L1 ... L5)或借助适于接收适合于修改电场强度的信号的金属场板来修改所述相移级的一个路径的折射率。 所述多个相移级的前两个相移级具有彼此不同的并且处于预定比的光路的长度差,而剩余的相移级具有相同的光路长度差。 因此,可以提供具有特别平坦的交叉响应特性的装置,由于傅立叶展开系列的不可避免的截断,基本上没有纹波。