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    • 8. 发明申请
    • Coupling structure for optical fibres and process for making it
    • 光纤耦合结构及其制作工艺
    • US20090136237A1
    • 2009-05-28
    • US10554618
    • 2003-04-29
    • Francesco MartiniPietro MontaniniGuido OlivetiAlberto RampullaGiacomo Rossi
    • Francesco MartiniPietro MontaniniGuido OlivetiAlberto RampullaGiacomo Rossi
    • H04B10/12G02B6/26G02B6/42H01L21/00
    • G02B6/132G02B6/136G02B6/4206
    • A coupling structure for coupling optical radiation, i.e., light, between an optical fibre and an optical device, e.g., a laser diode or a photodiode. The coupling structure has an optical through-via which guides the optical radiation to or from the optical fibre. Light exiting the fibre travels through a guidance channel so it remains substantially confined to a narrow optical path that mimics the fibre core. Conversely, light enters the fibre after having traveled through the guidance channel. The guidance channel has a first core region, the “channel core”, having first refractive index surrounded by a second region, the “channel cladding” having a second refractive index smaller than the first refractive index. The coupling structure, including the guidance channel, is preferably made of semiconductor-based material, more preferably of silicon-based material. The guidance channel is preferably silicon oxide. The coupling structure further has a fibre drive-in element, which facilitates insertion and alignment of the optical fibre to the guidance channel.
    • 用于耦合光纤与光学器件(例如激光二极管或光电二极管)之间的光辐射(即光)的耦合结构。 耦合结构具有将光学辐射引导到光纤或从光纤引导的光学通孔。 离开纤维的光线穿过引导通道,因此其基本上被限制在模拟纤维芯的窄光路上。 相反,光线穿过引导通道后进入光纤。 引导通道具有第一芯区域,具有由第二区域包围的第一折射率的“沟道芯”,具有小于第一折射率的第二折射率的“沟道包层”。 包括引导通道的连接结构优选由半导体材料制成,更优选由硅基材料制成。 引导通道优选为氧化硅。 耦合结构还具有光纤驱入元件,其有助于将光纤插入和对准引导通道。
    • 9. 发明授权
    • Method and system for bidirectional optical communication
    • 双向光通信的方法和系统
    • US08971721B2
    • 2015-03-03
    • US13320341
    • 2009-05-20
    • Rinaldo MazzoneFrancesco MartiniMauro Rudi Casanova
    • Rinaldo MazzoneFrancesco MartiniMauro Rudi Casanova
    • H04B10/00H04B10/516H04B10/2587H04B10/27H04B10/272H04B10/50H04B10/58H04J14/02H04B10/06
    • H04B10/516H04B10/2587H04B10/27H04B10/272H04B10/504H04B10/58H04J14/0246H04J14/025H04J14/0282
    • A method for bidirectional optical communication comprising the steps of:—at a first optical line terminal, directly modulating a laser source to generate a downstream optical signal which has an optical power spectrum comprising two peaks having a frequency separation and a non zero power difference at generation;—propagating said downstream optical signal at a distance along an optical line comprising at least a first optical fiber propagating said downstream optical signal to a second optical line terminal;—at the second optical line terminal: power splitting said downstream optical signal to generate a first and a second power portion of said downstream optical signal, spatially separated; passive filtering said first power portion of said downstream optical signal so as to increase in absolute value a respective power difference of said two peaks, so as to obtain a filtered optical signal which is thereafter detected; and amplitude modulating the second power portion of the downstream optical signal so as to obtain an upstream optical signal having a second amplitude modulation;—propagating back along said optical line the upstream optical signal to the first optical line terminal;—at said first optical line terminal, detecting said upstream optical signal; wherein the method further comprises the step of passive filtering said downstream optical signal and/or said second power portion of the downstream optical signal and/or said upstream optical signal, so as to lower, in absolute value, a respective non zero power difference of said two peaks.
    • 一种用于双向光通信的方法,包括以下步骤:在第一光线路终端处,直接调制激光源以产生下行光信号,所述下行光信号具有包括频率分离和非零功率差异的两个峰值的光功率谱 将所述下游光信号沿着包括至少第一光纤的光路线的一段距离传播到第二光线路终端;在第二光线路终端处:将所述下行光信号功率分配以产生 所述下游光信号的第一和第二功率部分在空间上分离; 无源滤波所述下行光信号的第一功率部分,以便绝对值增加所述两个峰值的相应功率差,从而获得随后检测的滤波后的光信号; 以及对下游光信号的第二功率部分进行幅度调制,以获得具有第二幅度调制的上行光信号;沿所述光线路向上移动上游光信号到第一光线路终端; - 在所述第一光线路 终端,检测所述上游光信号; 其中所述方法还包括以下步骤:对所述下游光信号和/或所述上游光信号的所述下游光信号和/或所述第二功率部分进行无源滤波,以便以绝对值降低相应的非零功率差 说了两个高峰。