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    BIDIRECTIONAL OPTICAL TRANSMISSION SYSTEM AND BIDIRECTIONAL OPTICAL TRANSMISSION METHOD
    3.
    发明公开
    BIDIRECTIONAL OPTICAL TRANSMISSION SYSTEM AND BIDIRECTIONAL OPTICAL TRANSMISSION METHOD 审中-公开

    公开(公告)号：EP3614581A1

    公开(公告)日：2020-02-26

    申请号：EP18787768.3

    申请日：2018-04-03

    申请人： NEC Corporation

    发明人： NAKAMURA Kohei

    IPC分类号： H04B10/297 ,  H04B10/294 ,  H04J14/02

    摘要： A bidirectional optical transmission system includes a first optical transmission line including a first repeater (30A), a second optical transmission line including a second repeater (30B), and C+L band transmitting/receiving devices (10, 20) connected to each other through these transmission lines so that they can communicate with each other. The C+L band transmitting/receiving device (10) transmits an optical signal in a C-band to the first optical transmission line and transmits an optical signal in an L-band to the second optical transmission line, and the C+L band transmitting/receiving device (20) transmits an optical signal in the C-band to the second optical transmission line and transmits an optical signal in the L-band to the first optical transmission line. The first repeater (30A) separates the optical signal in the C-band and the optical signal in the L-band bidirectionally propagating through the first optical transmission line from each other, and separately amplifies the separated optical signals, and the second repeater (30B) separates the optical signal in the C-band and the optical signal in the L-band bidirectionally propagating through the second optical transmission line from each other, and separately amplifies the separated optical signals. In this way, it is possible to expand a transmission capacity and alleviate deterioration in a transmission characteristic.

    Optical line terminal for a passive optical wavelength division multiplex network
    4.
    发明公开
    Optical line terminal for a passive optical wavelength division multiplex network 有权
    OptischesLeitungsendgerätfürein Passives optischesWellenlängenmultiplex-Netzwerk

    公开(公告)号：EP2854310A1

    公开(公告)日：2015-04-01

    申请号：EP13306352.9

    申请日：2013-09-30

    申请人： ALCATEL LUCENT

    发明人： Bonk, Rene ,  Schmuck, Harald ,  Pöhlmann, Wolfgang

    IPC分类号： H04B10/297

    CPC分类号： H04J14/0221 ,  H04B10/27 ,  H04B10/272 ,  H04B10/2972 ,  H04J14/0282

    摘要： Proposed is an OLT for a passive optical wavelength division multiplex network. The network contains optical transmitters for generating downstream signals of an L-Band, as well as optical receivers for receiving upstream signals of a C-Band. Furthermore, the OLT contains a bi-directional SOA and an optical interface. The optical interface, the SOA, the transmitters and the receivers are optically coupled such that an upstream signal received at the optical interface is firstly provided to the bi-directional SOA and subsequently from the SOA to one of the receivers, and such that a downstream signal generated by one of the transmitters is firstly provided to the bi-directional SOA and then subsequently to the optical interface. The bi-directional SOA has a gain function that is not constant with respect to a wavelength of an optical signal to be amplified. Furthermore, the gain function is maximal for a wavelength located within the C-band.

    摘要翻译： 提出了一种用于无源光波分复用网络的OLT。 网络包含用于生成L波段的下行信号的光发射机，以及用于接收C波段的上行信号的光接收机。 此外，OLT包含双向SOA和光接口。 光接口，SOA，发射机和接收机是光学耦合的，使得在光接口处接收的上行信号首先被提供给双向SOA，随后从SOA到接收机之一，并且使得下行 首先将一个发射机产生的信号提供给双向SOA，然后再提供给光接口。 双向SOA具有相对于待放大的光信号的波长不恒定的增益函数。 此外，增益函数对于位于C波段内的波长是最大的。

    OPTICAL AMPLIFIER APPARATUS
    7.
    发明公开
    OPTICAL AMPLIFIER APPARATUS 有权
    OPTISCHEVERSTÄRKERVORRICHTUNG

    公开(公告)号：EP1019991A4

    公开(公告)日：2000-10-18

    申请号：EP98939303

    申请日：1998-08-12

    申请人： CORNING INC

    发明人： JACOB DAVID ,  PRASSAS MICHEL

    IPC分类号： G02B27/28 ,  H01S3/06 ,  H01S3/10 ,  H04B10/291 ,  H04B10/297 ,  H04J14/02 ,  H04N7/22 ,  H04B10/17 ,  H04B10/207

    CPC分类号： H04J14/0221 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2972 ,  H04J14/02

    摘要： There is proposed an optical amplifier apparatus particularly for use in networks distributing signals by optical fibers, comprising first and second parallel optical branches (1, 2), the first optical branch (1) including optical amplifier means (5, 6) for amplifying digital signals and the second optical branch including optical amplifier means (7) for amplifying analogue signals, the optical amplifier means (5, 6) of the first optical path (1) being adapted to amplify bi-directional digital signals and the optical amplifier means (7) of the second optical branch (2) being adapted to amplify unidirectional analogue signals.

    摘要翻译： 提出了一种特别用于光纤分配信号的网络中的光学放大器装置，它包括第一和第二并行光分支（1,2），第一光分支（1）包括光放大器装置（5,6），用于放大数字 信号，第二光分支包括用于放大模拟信号的光放大装置（7），第一光路（1）的光放大装置（5,6）适于放大双向数字信号，光放大装置 所述第二光学分支（2）的所述第一光学分支（7）适于放大单向模拟信号。

    OPTICAL COMMUNICATION LINK WITH REMOTE OPTICALLY PUMPED AMPLIFIER
    9.
    发明公开
    OPTICAL COMMUNICATION LINK WITH REMOTE OPTICALLY PUMPED AMPLIFIER 审中-公开

    公开(公告)号：EP4262109A1

    公开(公告)日：2023-10-18

    申请号：EP22168027.5

    申请日：2022-04-12

    申请人： Adtran Networks SE

    发明人： Rapp, Lutz

    IPC分类号： H04B10/297

    摘要： A bidirectional optical communication link , OCL, (1) comprising a first optical transmission link, OTL1, adapted to transmit an optical signal from a near-end location (NEL) via a first optical fiber (2-1) to a remote-end location (REL); and a second optical transmission link, OTL2, adapted to transmit an optical signal from the remote-end location (REL) via a second optical fiber (2-2) to the near-end location(NEL); wherein at least one of the optical transmission links, OTL1, OTL2, comprises a remote optically pumped amplifier, ROPA, (3-1,3-3) having a gain medium which is pumped with pump light received by that gain medium through a third optical fiber (4) from a pump laser source provided at the near-end location (NEL) or provided at the remote-end location (REL) to supply the gain medium of the remote optical pump amplifier, ROPA, (3-1,3-2) with pump power.