CN1430827A - 光应答器 - Google Patents

光应答器 Download PDF

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Publication number
CN1430827A
CN1430827A CN01808272A CN01808272A CN1430827A CN 1430827 A CN1430827 A CN 1430827A CN 01808272 A CN01808272 A CN 01808272A CN 01808272 A CN01808272 A CN 01808272A CN 1430827 A CN1430827 A CN 1430827A
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China
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signal
pair
transmitter module
optical
module
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CN01808272A
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CN1208915C (zh
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O·马默
J·阿罗尔
I·古尔
B·马伊
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LETSGE NETWORK CO Ltd
Lightscape Networks Ltd
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LETSGE NETWORK CO Ltd
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Publication of CN1430827A publication Critical patent/CN1430827A/zh
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29Repeaters

Abstract

一种双E/O发射机模块的光应答器包括O/E接收器模块,能将从光信号源进入的光信号转变成电信号;一对并联的E/O发射机模块,每个都能将所述的电信号转变成输出的光信号;控制装置,用来启动所述的一对E/O发射机模块中的一个,而禁止所述的一对E/O发射机模块中的另一个;以及与所述的一对E/O发射机耦合的光耦合器,用来将来自所述的启动的E/O发射机模块的所述的输出光信号馈送到一光信号的目的地。

Description

光应答器
发明领域
本发明属于光应答器的领域。
发明背景
光环形网络包括两条光纤,一个用于插入和分出工作通道,而另一个用于保护通道。光学环形网络通常包括一个或多个所谓的单向光应答器,用于将光信号加入到工作通道上或从其分出光信号,所谓的1×2插入方向(add direction)光应答器用来将一些相同的光信号加到该工作通道和保护通道上,而所谓的2×1分出方向(drop direction)光应答器用来从该工作通道或该保护通道上分出光信号。
发明概述
按照本发明,提供有一双E/O发射机模块光应答器,包括:
(a)O/E接收器模块,能将从光信号源进入的光信号转变成电信号;
(b)一对并联的E/O发射机模块,每块都能将所述的电信号转变成输出的光信号;
(c)控制装置,用来启动所述的一对E/O模块中的一个和禁止所述的一对E/O模块中的另一个;及
(d)光耦合器,与所述的一对E/O发射机模块耦连,用来将从所述启动的E/O发射机模块出来的光信号馈送到光信号的目的地。
本发明提出了一新颖的方案,即使在设备发生故障时也可通过只具有一单个E/O发射机模块的传统的单向或分出方向光应答器来解决数据中止的问题。
附图简述
为了理解本发明和看它实际上可能是如何完成的,现在就仅通过一些非限制性的例子,并借助附图来介绍一些优选实施例,其中相同的部件标以相同的编号,所述的附图如下:
图1是双E/O发射机模块的单向光应答器的示意图;
图2是双E/O发射机模块的分出方向光应答器的示意图。
附图详述
图1表示一双E/O发射机模块的单向光应答器10,包括一与光信号源(未画出)耦合的光电(O/E)接收器模块11;现场可编程门阵列(FPGA)控制装置12;电分路器13;电选择器14(构成开关元件);主路径16,该主路径延伸于该分路器13和该选择器14之间并具有一时钟和数据恢复(CDR)单元17,解复用器18,前向纠错(FEC)和性能检测(PM)单元19,和一多路复用器21;延伸于分路器13和选择器14之间的旁路径22(由电分流器构成);第二电分路器23;一对并联的E/O发射模块24和26,以及一与光信号的目的地(未画出)耦合的光学耦合器27。
该O/E接收器模块11将进入的光信号转变成电信号,并当在其上检测不到光信号时,向该FPGA控制装置12提供一光信号丢失(LOS)信号。该分路器13将一从该O/E接收器模块11来的电信号分裂成两个相同的信号,分别馈送到该主路径16和该旁路径22。该CDR单元17完成电信号上的时钟和数据恢复,并在检测不到数据信号,也就是检测到由连续的0组成的流时,向该FPGA控制单元11提供一数据信号丢失(LOS)信号。该FEC和PM单元19完成对电信号的前向纠错和性能检测,并视情况向该FPGA控制装置12提供数据信号丢失(LOS)信号,帧丢失(LOF)信号,信号故障(SF)信号,以及信号劣化(SD)信号。该选择器14可将来自主路径16之一或旁路径22的电信号馈送到分路器23,这将由来自该FPGA控制装置12的SX信号决定。该分路器23将该电信号分成两相同的信号,分别馈送到该E/O发射机模块24和26。该E/O发射机模块24和26能独立地被来自该FPGA控制装置12的TX_EN信号启动,而且每个E/O发射机模块都能将电信号转变成输出的光信号,馈送到该光耦合器27。在该E/O发射机模块24和26被启动但在其上却没检测到光信号时,它们就向该FPGA控制装置12提供TX_LOS信号。
在光应答器10的默认操作模式中,该FPGA控制单元12切换该选择器23,以便把来自主路径16的电信号馈送到该E/O发射机模块24,并禁止该E/O发射机模块26。在TX_LOS_1信号来自E/O发射机模块24的情形,它被禁止,而该E/O发射机模块26则启动。用E/O发射机模块26防止E/O发射机模块24的设备故障的保护受该选择器23的位置选择的影响。
虽然本发明已对有限数的实施例做了描述,但应知道,本发明可在附录的权利要求范围内进行很多的变化,改进,和其它应用。例如,该双E/O发射机模块光应答器特别适合于用作分出方向光应答器30(参看图2)

Claims (2)

1.一种双E/O发射机模块光应答器,包括:
(a)O/E接收器模块,能将从光信号源进入的光信号转变成电信号;
(b)一对并联的E/O发射机模块,每个都能将所述的电信号转变成输出的光信号;
(c)控制装置,用来启动所述的一对E/O发射机模块中的一个和禁止所述的一对E/O模块中的另一个;
(d)与所述的一对E/O发射机模块耦连的耦合器,用来将从所述的启动的E/O发射机模块出来的光信号馈送到光信号的目的地。
2.按照权利要求1的应答器还包括第二O/E接收器模块,用来将第二光信号转变成第二电信号,和开关元件用来将所述的电信号之一切换到所述的启动的E/O发射机模块上。
CNB018082726A 2000-04-18 2001-04-15 光应答器 Expired - Fee Related CN1208915C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL13571500A IL135715A (en) 2000-04-18 2000-04-18 Optical transmitter-transponder
IL135715 2000-04-18

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CN1430827A true CN1430827A (zh) 2003-07-16
CN1208915C CN1208915C (zh) 2005-06-29

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US (2) US20030043432A1 (zh)
EP (1) EP1277294B1 (zh)
KR (1) KR100785943B1 (zh)
CN (1) CN1208915C (zh)
AT (1) ATE395756T1 (zh)
AU (1) AU2001250621A1 (zh)
CA (1) CA2406082A1 (zh)
DE (1) DE60134008D1 (zh)
IL (1) IL135715A (zh)
WO (1) WO2001080465A2 (zh)

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CN1208915C (zh) 2005-06-29
WO2001080465A2 (en) 2001-10-25
IL135715A0 (en) 2001-05-20
DE60134008D1 (de) 2008-06-26
CA2406082A1 (en) 2001-10-25
ATE395756T1 (de) 2008-05-15
KR100785943B1 (ko) 2007-12-14
AU2001250621A1 (en) 2001-10-30
US20030043432A1 (en) 2003-03-06
EP1277294B1 (en) 2008-05-14
KR20030007527A (ko) 2003-01-23
WO2001080465A3 (en) 2002-04-25
US20050238361A1 (en) 2005-10-27
IL135715A (en) 2004-02-19
EP1277294A2 (en) 2003-01-22

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