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公开(公告)号：US20120288286A1
公开(公告)日：2012-11-15
申请号：US13106619
申请日：2011-05-12
IPC分类号： H04B10/06
CPC分类号： H04B10/63 , H04B10/611 , H04B10/613 , H04B10/6164 , H04B10/6165 , H04B10/64
摘要： An optical receiver that uses a coherent optical quadrature-detection scheme to demodulate an amplitude-modulated optical input signal in a manner that enables the use of a free-running optical local-oscillator source. The optical receiver employs a signal combiner that combines, into an electrical output signal, the in-phase and quadrature-phase electrical signals generated as a result of the quadrature detection of the optical input signal. Depending on the frequency offset between the local-oscillator signal and the input signal, the electrical output signal produced by the signal combiner can be a desired baseband signal or an intermediate-frequency signal. The latter signal can be demodulated to recover the baseband signal in a relatively straightforward manner, e.g., using a conventional intermediate-frequency electrical demodulator coupled to the signal combiner.
摘要翻译： 一种光接收机，其使用相干光正交检测方案以能够使用自由运行的光本地振荡器源的方式解调幅度调制的光输入信号。 光接收机采用将由光输入信号正交检测结果产生的同相和正交相电信号组合成电输出信号的信号组合器。 根据本地振荡器信号和输入信号之间的频率偏移，由信号组合器产生的电输出信号可以是期望的基带信号或中频信号。 后一个信号可以被解调以以相对直接的方式恢复基带信号，例如使用耦合到信号组合器的常规中频电解调器。
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公开(公告)号：US07672553B2
公开(公告)日：2010-03-02
申请号：US11681070
申请日：2007-03-01
IPC分类号： G02B6/26
CPC分类号： G02F1/025 , G02F2001/0152
摘要： The present invention provides an optical waveguide modulator. In one embodiment, the optical waveguide modulator includes a semiconductor planar optical waveguide core and doped semiconductor connecting paths located adjacent opposite sides of the core and capable of applying a voltage across the core. The optical waveguide core and connecting paths form a structure having back-to-back PN semiconductor junctions. In another embodiment, the optical waveguide modulator includes a semiconductor optical waveguide core including a ridge portion wherein the ridge portion has at least one PN semiconductor junction located therein. The optical waveguide modulator also includes one or more doped semiconductor connecting paths located laterally adjacent the ridge portion and capable of applying a voltage to the ridge portion.
摘要翻译： 本发明提供一种光波导调制器。 在一个实施例中，光波导调制器包括半导体平面光波导芯和与芯相邻的相邻侧面的掺杂半导体连接路径，并能跨越芯施加电压。 光波导芯和连接路径形成具有背对背PN半导体结的结构。 在另一个实施例中，光波导调制器包括半导体光波导芯，其包括脊部，其中脊部具有位于其中的至少一个PN半导体结。 光波导调制器还包括一个或多个掺杂的半导体连接路径，其位于横向邻近脊部分并且能够向脊部分施加电压。
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公开(公告)号：US20080212913A1
公开(公告)日：2008-09-04
申请号：US11681070
申请日：2007-03-01
IPC分类号： G02F1/035
CPC分类号： G02F1/025 , G02F2001/0152
摘要： The present invention provides an optical waveguide modulator. In one embodiment, the optical waveguide modulator includes a semiconductor planar optical waveguide core and doped semiconductor connecting paths located adjacent opposite sides of the core and capable of applying a voltage across the core. The optical waveguide core and connecting paths form a structure having back-to-back PN semiconductor junctions. In another embodiment, the optical waveguide modulator includes a semiconductor optical waveguide core including a ridge portion wherein the ridge portion has at least one PN semiconductor junction located therein. The optical waveguide modulator also includes one or more doped semiconductor connecting paths located laterally adjacent the ridge portion and capable of applying a voltage to the ridge portion.
摘要翻译： 本发明提供一种光波导调制器。 在一个实施例中，光波导调制器包括半导体平面光波导芯和与芯相邻的相邻侧面的掺杂半导体连接路径，并能跨越芯施加电压。 光波导芯和连接路径形成具有背对背PN半导体结的结构。 在另一个实施例中，光波导调制器包括半导体光波导芯，其包括脊部，其中脊部具有位于其中的至少一个PN半导体结。 光波导调制器还包括一个或多个掺杂的半导体连接路径，其位于横向邻近脊部分并且能够向脊部分施加电压。
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