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公开(公告)号：EP2634943A1
公开(公告)日：2013-09-04
申请号：EP12157950.2
申请日：2012-03-02
CPC分类号： H04B10/272 , H04B10/2587 , H04J14/0246 , H04J14/025 , H04J14/0265 , H04J14/0282
摘要： An optical signal is generated by an SOA and then modulated by an optical amplitude modulation device. The signal is transmitted into a first end of an optical transmission line with a first polarization state. A fraction of the optical signal is re-transmitted into the other end of the transmission line, such that when it has at the other end a polarization state orthogonal to the polarization state of the signal fraction present at the other end. The re-transmitted signal, when having at the first end a polarization state orthogonal to the first polarization state, is guided from the first end to the SOA, next to the modulation device and then to the first end without passing the SOA again, using a polarizing beam splitter and a polarization device. The SOA is operated in a gain saturation state, such that an amplitude modulation of the re-transmitted optical signal is cancelled.
摘要翻译： 光信号由SOA产生，然后由光幅度调制装置调制。 信号被传输到具有第一偏振状态的光传输线的第一端。 光信号的一部分被重新传输到传输线的另一端，使得当另一端具有与另一端存在的信号级分的极化状态正交的极化状态时。 当在第一端处具有与第一极化状态正交的极化状态时，重新发射的信号从第一端被引导到接近调制装置的SOA，然后被引导到第一端而不再次通过SOA，使用 偏振分束器和偏振装置。 SOA在增益饱和状态下操作，使得重新发送的光信号的幅度调制被消除。
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2.发明公开Polarization stabilization scheme for un-cooled self-tuning cavity for colorless ultra broadband PON 有权Polarisierungsstabilisierungsschemafürungekühlten，selbstjustierenden Hohlraumfürfarblose Ultrabreitband-PON
公开(公告)号：EP2512043A1
公开(公告)日：2012-10-17
申请号：EP11162510.9
申请日：2011-04-14
发明人： Martinelli, Mario , Gavioli, Giancarlo , Galli, Paola , Di Mola, Domenico , Parolari, Paola , Marazzi, Lucia , Razzetti, Luca , Campi, Domenico , Suberini, Luca
IPC分类号： H04B10/145 , H01S5/14 , H01S3/106
CPC分类号： H04B10/27 , H01S3/08054 , H01S5/02284 , H01S5/02469 , H01S5/141 , H01S5/146 , H01S5/4062 , H01S5/4087 , H04B10/532
摘要： The present document relates to the field of optical access networks. In particular, the present document relates to an optical transmitter, in particular (but not exclusively) for a WDM (Wavelength Division Multiplexing) passive optical network, and to a WDM PON comprising such an optical transmitter. An optical transmitter arrangement (7) is described. The arrangement (7) comprises a first mirror (41) and a second mirror (64) at a first end and a second end of a cavity, respectively; an optical amplifier (63) configured to amplify light polarized in a first polarization plane; wherein the optical amplifier (63) is positioned within the cavity upstream the first mirror (64); an optical waveguide (5-2) configured to transmit light from the optical amplifier (63) to the second mirror (41) and vice versa; a first non-reciprocal polarization rotator (82) positioned within the cavity upstream of the optical amplifier (63) and downstream of the optical waveguide (5-2); and a second non-reciprocal polarization rotator (81) positioned within the cavity upstream of the optical waveguide (5-2) and downstream of the first mirror (41); wherein the first (82) and second (81) non-reciprocal polarization rotators are configured to rotate the polarization of the light such that light which re-enters the optical amplifier (63) after having been reflected by the second mirror (41) is polarized in the first polarization plane.
摘要翻译： 本文件涉及光接入网络领域。 特别地，本文件涉及用于WDM（波分复用）无源光网络的光发射机，特别是（但不排他地）），以及包括这种光发射机的WDM PON。 描述了一种光发射器装置（7）。 该装置（7）分别包括位于空腔的第一端和第二端的第一反射镜（41）和第二反射镜（64） 光放大器（63），被配置为放大在第一偏振面中偏振的光; 其中所述光放大器（63）位于所述空腔的第一反射镜（64）的上游。 被配置为将光从所述光放大器（63）传输到所述第二反射镜（41）的光波导（5-2），反之亦然; 位于光放大器（63）上游并位于光波导（5-2）下游的空腔内的第一非倒数偏振旋转器（82）; 以及位于所述光波导（5-2）上游并位于所述第一反射镜（41）下游的所述空腔内的第二非互易偏振旋转器（81）。 其中所述第一（82）和第二（81）不可逆偏振旋转器被配置为旋转所述光的偏振，使得在被所述第二反射镜（41）反射之后重新进入所述光放大器（63）的光是 在第一极化平面中极化。
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公开(公告)号：EP2408125A1
公开(公告)日：2012-01-18
申请号：EP10168889.3
申请日：2010-07-08
发明人： Marazzi, Lucia , Galli, Paola , Parolari, Paola , Di Mola, Domenico , Spinelli, Carlo , Martinelli, Mario
IPC分类号： H04B10/145 , H04J14/02 , G02B6/293
CPC分类号： H04J14/0282 , G02B6/2931 , H04B10/50 , H04J14/02 , H04J2014/0253
摘要： It is disclosed an optical transmitter comprising a first mirror and a second mirror, an optical amplifier and an optical component comprising a first port, a second port and a third port. The optical component is configured so that a first and second diffraction orders of an optical signal at a given wavelength entering the optical component through the first port are focused at the second port and at the third port, respectively. The third port is optically connected to the second mirror. The first mirror and the second mirror delimit a cavity that comprises the optical component and the optical amplifier, the cavity being configured to emit a coherent optical radiation at the given wavelength through the second port.
摘要翻译： 公开了一种光发射器，包括第一反射镜和第二反射镜，光放大器以及包括第一端口，第二端口和第三端口的光学部件。 光学部件被配置为使得通过第一端口进入光学部件的给定波长的光学信号的第一和第二衍射级分别聚焦在第二端口和第三端口处。 第三端口光学连接到第二个反射镜。 第一反射镜和第二反射镜限定包括光学部件和光学放大器的空腔，空腔被配置为通过第二端口发射在给定波长处的相干光辐射。
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