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1. 发明申请

WO2021184018A1 IMPROVED DISPERSION COMPENSATION CIRCUIT WITH CASCADED VARACTOR CIRCUIT ELEMENTS 审中-公开
公开(公告)号：WO2021184018A1
公开(公告)日：2021-09-16
申请号：PCT/US2021/022422
申请日：2021-03-15
申请人： ARRIS ENTERPRISES LLC
发明人： WANG, Jun
IPC分类号： H04B10/2513 , H04B10/2575
摘要： Systems and methods for providing dispersion compensation to optical systems. In some embodiments, the disclosed dispersion compensation system may be capable of adjusting the amount of dispersion compensation. The disclosed dispersion compensation system may include a cascade of varactor circuit elements, each with separate bias control, and optionally may include one or more switches to enable or disable selective ones of the cascaded varactor circuit elements.

2. 发明申请

WO2020123944A1 AUTOMATIC BIAS CONTROL OF AN OPTICAL TRANSMITTER 审中-公开
公开(公告)号：WO2020123944A1
公开(公告)日：2020-06-18
申请号：PCT/US2019/066232
申请日：2019-12-13
申请人： ARRIS ENTERPRISES LLC
发明人： WANG, Jun
IPC分类号： H04B10/50 , G02F1/01
摘要： In one embodiment, an electro-absorption modulator receives an optical light from an optical light source and outputs a modulated optical signal. The electro-absorption modulator includes a bias voltage used to set a predetermined modulation performance and an output power of the electro-absorption modulator. A controller measures a photocurrent generated by the electro-absorption modulator and uses the photocurrent as a reference to automatically control the bias voltage of the electro-absorption modulator to maintain the predetermined modulation performance and the output power of the electro-absorption modulator when a detuning change occurs between the electro-absorption modulator and the optical light source throughout the lifetime of transmitters based on an EML device.

3. 发明申请

WO2017165067A1 IMPROVED STIMULATED BRILLOUIN SCATTERING (SBS) SUPPRESSION IN AN OPTICAL COMMUNICATIONS SYSTEM 审中-公开
标题翻译：光通信系统中改进的刺激布里渊散射（SBS）抑制
公开(公告)号：WO2017165067A1
公开(公告)日：2017-09-28
申请号：PCT/US2017/019262
申请日：2017-02-24
申请人： ARRIS ENTERPRISES LLC
发明人： WANG, Jun , MUTALIK, Venkatesh G. , SCHEMMANN, Marcel F. , CHASMAWALA, Shamsuddin H.
IPC分类号： H04B10/2537 , H04B10/2575
摘要： Techniques for transmitting an optical signal through optical fiber with an improved stimulated Brillouin scattering (SBS) suppression and an improved transmitters signal to noise ratio (SNR) include externally modulating a light beam emitted from a light source with a high frequency signal. The light beam is also modulated externally with an RF information-carrying signal. The high frequency signal is at least twice a highest frequency of the RF signal. The high frequency signal modulating the light source can be split, providing a portion of the split signal to a phase and gain control circuit for adjusting a phase/gain. The output of phase and gain control circuit can be applied to the external modulator to eliminate intensity modulation for SBS suppression improvement. The optical transmitters SNR is further improved by cancelling a beat between SBS suppression modulation tone and out of band distortion spectrum of information bearing RF signal.
摘要翻译：用改进的受激布里渊散射（SBS）抑制和改进的发射机信噪比（SNR）通过光纤发射光信号的技术包括：用光源外部调制从光源发射的光束，高频信号。光束也通过携带RF信息的信号进行外部调制。高频信号至少是RF信号的最高频率的两倍。调制光源的高频信号可以被分离，将分离信号的一部分提供给用于调整相位/增益的相位和增益控制电路。相位和增益控制电路的输出可以应用于外部调制器，以消除强度调制以改善SBS抑制。通过消除SBS抑制调制音调和带信息的RF信号的带外失真频谱之间的差拍，进一步改善了光发射机SNR。

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