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1. 发明授权

US5453872A Fiber-optic amplifier as wavelength converter 失效
标题翻译：光纤放大器作为波长转换器
公开(公告)号：US5453872A
公开(公告)日：1995-09-26
申请号：US280840
申请日：1994-07-26
申请人： Rolf Heidemann , Henning Bulow , Thomas Pfeiffer
发明人： Rolf Heidemann , Henning Bulow , Thomas Pfeiffer
IPC分类号： H01S3/067 , H01S3/16 , H04B10/291 , H01S3/106 , G02F1/39 , H01S3/0933
CPC分类号： H04B10/291 , H01S3/06754 , H04B10/2912 , H01S3/1608
摘要： An optical system includes a fiber-optic amplifier having a section of optical waveguide doped with a rare-earth element and a pump-light source for emitting pump light, the fiber-optic amplifier receiving signal light of a first wavelength and outputting at least signal light of a second wavelength. An optical-to-electrical transducer receives the signal light of the second wavelength from the fiber-optic amplifier and produces an electrical output signal. The signal light of the second wavelength is pump light which is unabsorbed in the section of optical waveguide.
摘要翻译：光学系统包括具有掺杂有稀土元素的光波导部分和用于发射泵浦光的泵浦光源的光纤放大器，该光纤放大器接收第一波长的信号光并至少输出信号第二波长的光。光电换能器从光纤放大器接收第二波长的信号光，并产生电输出信号。第二波长的信号光是在光波导部分中未被吸收的泵浦光。

2. 发明授权

US5550667A Optical transmitter 失效
标题翻译：光发射机
公开(公告)号：US5550667A
公开(公告)日：1996-08-27
申请号：US108325
申请日：1993-08-18
申请人： Heinz Krimmel , Henning Bulow , Rolf Heidemann , Jurgen Otterbach
发明人： Heinz Krimmel , Henning Bulow , Rolf Heidemann , Jurgen Otterbach
IPC分类号： H04B10/2537 , H04B10/04
CPC分类号： H04B10/2537
摘要： A laser (2) of an optical transmitter (1) for the transmission of an analog broadband signal for CATV in particular, can be amplitude-modulated in two different manners with an intelligence signal (N). Direct modulation can lead to an undesired additional frequency modulation. With indirect modulation by means of an optical intensity modulator (3), Brillouin scattering occurs at powers of approximately 10 mW in an optical fiber of the transmission path connected to the optical transmitter (1). Both modulations lead to distortions of the transmitted signal. In order to avoid the disadvantages of both modulations in a technically simple fashion, the carrier emitted from a laser (2) is indirectly modulated with an intelligence signal (N) and the laser (2) also faintly directly modulated with an energy-dispersing signal (V). The faint direct modulation leads to a constant, limited wave length alteration of the optical signal, such that Brillouin scattering is reduced, simultaneously with the avoidance of dispersion distortions.
摘要翻译：用于传输CATV的模拟宽带信号的光发射机（1）的激光器（2）可以用智能信号（N）以两种不同的方式进行幅度调制。直接调制可能导致不需要的附加频率调制。通过利用光强度调制器（3）的间接调制，在连接到光发送器（1）的传输路径的光纤中，约为10mW的功率发生布里渊散射。两种调制都会导致发送信号的失真。为了避免技术上简单的两种调制的缺点，从激光器（2）发射的载体用智能信号（N）间接调制，激光器（2）也用能量分散信号微弱地直接调制（V）。微弱的直接调制导致光信号的恒定的有限波长变化，使得布里渊散射减小，同时避免色散失真。

3. 发明授权

US5499135A Optical amplifier 失效
标题翻译：光放大器
公开(公告)号：US5499135A
公开(公告)日：1996-03-12
申请号：US323239
申请日：1994-10-14
申请人： Rolf Heidemann , Thomas Pfeiffer , Manfred Kaiser
发明人： Rolf Heidemann , Thomas Pfeiffer , Manfred Kaiser
IPC分类号： H01S3/094 , H01S3/0941 , H01S3/30 , G02B6/26
CPC分类号： H01S3/094003 , H01S3/0941 , H01S3/094011 , H01S3/094076 , H01S3/09408
摘要： Known optical amplifiers, which are used in a light transmission path to amplify the light signals to be transmitted, have the disadvantage that the semiconductor lasers, used as pump lasers therein, are very sensitive to feedback.According to the invention, the operating current of such pump lasers (4) is modulated at a high frequency, which causes the pump laser to operate in a multi-mode, thereby making it insensitive to feedback. For example, the operating current is DC, on which AC is superimposed.In the event the optical amplifier has two pump lasers, their operating current is also modulated. Both pump lasers are then advantageously alternately switched on and off at a sufficiently high switching frequency, which also prevents reciprocal interference.
摘要翻译：用于光传输路径以放大要传输的光信号的已知光放大器的缺点在于，用作其中的激光器的半导体激光器对反馈非常敏感。根据本发明，这种泵浦激光器（4）的工作电流以高频调制，这使得泵浦激光器以多模式操作，从而使其对反馈不敏感。例如，工作电流为DC，叠加AC。在光放大器有两个泵浦激光器的情况下，它们的工作电流也被调制。两个泵浦激光器有利地以足够高的开关频率交替地接通和关断，这也防止了相互干扰。

4. 发明授权

US5475521A Optical communication system with monitoring device for avoiding giant pluses 失效
标题翻译：具有监控装置的光通信系统，用于避免巨型故障
公开(公告)号：US5475521A
公开(公告)日：1995-12-12
申请号：US58454
申请日：1993-05-06
申请人： Rolf Heidemann
发明人： Rolf Heidemann
IPC分类号： G02F1/35 , H01S3/094 , H01S3/13 , H01S3/131 , H04B10/291 , H04B10/293 , H04B10/17
CPC分类号： H04B10/2931 , H04B10/2912 , H01S3/06754 , H01S3/094003 , H01S3/10015
摘要： If, in optical communication systems using fiber-optic amplifiers, the optical isolator at the input is omitted on cost grounds and because of the deterioration of the noise characteristics caused by the insertion loss, a giant pulse may be developed when a fiber-optic connector at the input is being separated. To avoid this occurrence, use is made of a monitoring device (7) which, when the power input to the fiber-optic amplifier (4, 5, 3, 6) drops below a given threshold, quickly turns off the current of the pump laser (4) or interrupts the light path of the pump laser (4).
摘要翻译：如果在使用光纤放大器的光通信系统中，输入端的光隔离器在成本上被忽略，并且由于由插入损耗引起的噪声特性的恶化，则当光纤连接器在输入被分离。为了避免这种情况的发生，使用监视装置（7），当光纤放大器（4,5,3,6）的电力输入下降到低于给定阈值时，快速关闭泵的电流激光（4）或中断泵激光器（4）的光路。

5. 发明授权

US5363385A Fiber-optic amplifier with control of the pump light wavelength 失效
标题翻译：光纤放大器控制泵浦光波长
公开(公告)号：US5363385A
公开(公告)日：1994-11-08
申请号：US20083
申请日：1993-02-19
申请人： Rolf Heidemann
发明人： Rolf Heidemann
IPC分类号： H01S3/07 , H01S3/06 , H01S3/094 , H01S3/13 , H01S3/131 , H01S3/30 , H01S3/091
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/09415 , H01S5/0612
摘要： A fiber-optic amplifier for use with optical communications systems includes a light waveguide piece for amplifying an optical input signal. A pump light source is coupled to the amplifying light waveguide piece and includes a semiconductor laser for generating pump light for the amplifying light waveguide piece. A control device regulates the wavelength of the pump light generated by the semiconductor laser to be within a desired wavelength range so that the pump light is maximally absorbed in the amplifying light waveguide piece.
摘要翻译：用于光通信系统的光纤放大器包括用于放大光输入信号的光波导片。泵浦光源耦合到放大光波导片，并且包括用于产生用于放大光波导片的泵浦光的半导体激光器。控制装置将由半导体激光器产生的泵浦光的波长调节到期望的波长范围内，使得泵浦光在放大光波导片中被最大程度地吸收。

6. 发明授权

US5091985A Optical signal connection device for units to be inserted in a rack 失效
标题翻译：用于在机架中插入的单元的光信号连接装置
公开(公告)号：US5091985A
公开(公告)日：1992-02-25
申请号：US640799
申请日：1991-01-16
申请人： Rolf Heidemann
发明人： Rolf Heidemann
IPC分类号： G02B6/122 , G02B6/34 , G02B6/42 , G02B6/43 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14 , H05K7/14 , H05K7/18
CPC分类号： G02B6/43 , G02B6/34 , G02B6/4246
摘要： In a signal connecting device for the establishment of communication paths between insertable units in a rack in which signal connections are formed by at least one optical waveguide which is associated with a rear panel of the rack, coupling is effected by imaging lenses associated with the insertable units. When a unit is inserted, its associated lenses are disposed opposite or lie against the optical waveguide of the rear panel.
摘要翻译：在信号连接装置中，用于建立在机架中的可插入单元之间的通信路径，其中信号连接由与机架的后面板相关联的至少一个光波导形成，通过与可插入的相关联的成像透镜单位。当插入单元时，其相关联的透镜与后面板的光波导相对或相对设置。

7. 发明授权

US06320878B1 Active demarcation point of an access network 失效
标题翻译：接入网络的主动分界点
公开(公告)号：US06320878B1
公开(公告)日：2001-11-20
申请号：US08971971
申请日：1997-11-17
申请人： Heinz Krimmel , Rainer Fritschi , Rolf Heidemann
发明人： Heinz Krimmel , Rainer Fritschi , Rolf Heidemann
IPC分类号： H04J102
CPC分类号： H04N7/22 , H04N7/17309
摘要： In a hybrid fiber/coax access network (NET) with downstream and upstream channels, the upstream channel serves to transmit voice and video signals as well as data signals from groups of customer locations (END) to a subcenter (HUB). A demarcation point (UP) provides the interface between the access network (NET) and the private network of the customer location (END). It contains at least two devices (BP4, BP5, BP6) for frequency-splitting received signals in the upstream frequency band, at least two switches (S4, S5, S6) following the at least two devices (BP4, BP5, BP6) and serving to block or unblock individual upstream frequency ranges, a measuring unit (MESS2) for measuring the amplitudes or intensities of the signals in the split frequency ranges, and a control unit (CTRL) for evaluating the measured values and controlling the at least two switches (S4, S5, S6). For a customer location (END), individual upstream frequency ranges can thus be telemetrically blocked for a limited time. Decentralized and autonomous monitoring of individual upstream frequency ranges is accomplished by a measuring unit which is controlled by the demarcation point (UP) itself.
摘要翻译：在具有下行和上行信道的混合光纤/同轴电缆接入网络（NET）中，上行信道用于将语音和视频信号以及从客户位置组（END）的数据信号传输到子中心（HUB）。分界点（UP）提供访问网络（NET）和客户位置（END）的专用网络之间的接口。它包含用于在上行频带中分频接收信号的至少两个装置（BP4，BP5，BP6），至少两个装置（BP4，BP5，BP6）之后的至少两个开关（S4，S5，S6）和用于阻断或解除单个上游频率范围的测量单元（MESS2），用于测量分离频率范围内的信号的幅度或强度的测量单元（MESS2），以及用于评估测量值并控制至少两个开关的控制单元（CTRL）（S4，S5，S6）。对于客户位置（END），单个上游频率范围可以在有限的时间内被遥测。单独的上行频率范围的分散和自主监控由测量单元完成，该测量单元由分界点（UP）本身控制。

8. 发明授权

US5719874A Time-division-multiplexing method and apparatus 失效
标题翻译：时分复用方法和装置
公开(公告)号：US5719874A
公开(公告)日：1998-02-17
申请号：US547708
申请日：1995-10-19
申请人： Rolf Heidemann , Heinz Krimmel , Jurgen Otterbach
发明人： Rolf Heidemann , Heinz Krimmel , Jurgen Otterbach
IPC分类号： H04J3/16 , H04J14/08
CPC分类号： H04J3/1647 , H04J3/1694 , H04J14/08
摘要： In known optical distribution systems, a signal intended for the subscribers is distributed from a transmitting point to all network terminations (point-to-multipoint transmission). The receivers, which are connected to a passive optical network, are adapted to a common bit rate. If a need for a higher data rate arises at a network termination, this need can only be satisfied in the prior art by converting all receivers. This is not possible without interrupting the service. Furthermore, the conversion entails great expense, since the receivers of these network terminations where the need for information is unchanged have to be converted as well. By a time-division-multiplexing method, a time-division multiplex signal is generated which has a frame whose duration is equal to one bit period (T) of a digital signal, and which is divided into k time slots (ZS). At least two time slots (ZS) are used for one digital signal, and one respective time slot (ZS) is used for each of the remaining digital signals.
摘要翻译：在已知的光分配系统中，用于用户的信号从发射点分发到所有网络终端（点到多点传输）。连接到无源光网络的接收机适用于公共比特率。如果在网络终止时需要较高的数据速率，则只需在现有技术中通过转换所有接收机来满足这一需求。这不可能不中断服务。此外，转换需要很大的费用，因为这些网络终端的接收者在信息需求不变的情况下也必须被转换。通过时分多路复用方法，产生时间复用信号，该时分复用信号的持续时间等于数字信号的一个比特周期（T），并被划分为k个时隙（ZS）。对于一个数字信号使用至少两个时隙（ZS），并且对于每个剩余的数字信号使用一个相应的时隙（ZS）。

9. 发明授权

US5521752A Fiber-optic amplifier with a device for monitoring the input power 失效
标题翻译：具有监控输入功率的设备的光纤放大器
公开(公告)号：US5521752A
公开(公告)日：1996-05-28
申请号：US217359
申请日：1994-03-24
申请人： Rolf Heidemann , Bernhard Junginger
发明人： Rolf Heidemann , Bernhard Junginger
IPC分类号： H01S3/00 , H01S3/06 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/102 , H01S3/131 , H04B10/077 , H04B10/079 , H04B10/291 , H04B10/08
CPC分类号： H04B10/291 , H01S3/094003 , H04B10/077 , H04B10/07955 , H04B10/2912 , H01S3/0014 , H01S3/1022 , H01S3/1315
摘要： The input light in fiber-optic amplifiers is monitored in order to turn off the system in which it is contained, or individual components of the system, e.g. the fiber-optic amplifier itself, when input light is lacking. To that effect, in known fiber-optic amplifiers, a portion of the input light is coupled out by a coupler. However, this coupler has disadvantages; e.g. the signal-to-noise ratio deteriorates. To monitor the input light, the fiber-optic amplifier of the present invention uses a device (4), which couples out and evaluates the pump light that was not absorbed by the section of the optical waveguide (2).
摘要翻译：监视光纤放大器中的输入光，以便关闭其中所包含的系统或系统的各个部件，例如，光纤放大器本身，当输入光不足时。为此，在已知的光纤放大器中，输入光的一部分由耦合器耦合出来。然而，这种耦合器有缺点; 例如信噪比恶化。为了监视输入光，本发明的光纤放大器使用一个装置（4），该装置耦合出并且评估不被光波导（2）的部分吸收的泵浦光。

10. 发明授权

US5473286A Microwave generator circuit having oscillator and controller responsive to separate wavelengths 失效
标题翻译：具有响应分离波长的振荡器和控制器的微波发生器电路
公开(公告)号：US5473286A
公开(公告)日：1995-12-05
申请号：US198831
申请日：1994-02-18
申请人： Rolf Heidemann
发明人： Rolf Heidemann
IPC分类号： H04B10/04 , H03L7/24 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28
CPC分类号： H03L7/24
摘要： A microwave generator has its microwave frequency optically phase-locked by means of a reference frequency of a reference signal, wherein at least one portion of an electronic circuit arrangement is supplied with an optical reference carrier signal modulated with the reference frequency. The circuit arrangement (16) includes two components (Q1 to Q6; Q10, Q11) based on different semiconductor types which are chosen so that one of them, the first component, which is of a first semiconductor type, optically responds to the reference carrier signal (3) and, thus, to the reference frequency (f.sub.1 Mod1. . . Modn) for achieving synchronization, and that--independently of the response of the first component--the other, second component, which is of a second semiconductor type, responds to an optical control carrier signal (6) differing in frequency from the reference carrier signal (3). The amplitude of the first component is controlled by means of a control signal (7) modulated onto the optical control carrier signal (6).
摘要翻译：微波发生器通过参考信号的参考频率将其微波频率光锁相，其中电子电路装置的至少一部分被提供以参考频率调制的光参考载波信号。电路装置（16）包括基于不同半导体类型的两个分量（Q1至Q6; Q10，Q11），这些半导体类型被选择为使得它们中的一个，第一半导体类型的第一分量光学地响应参考载波信号（3），从而达到用于实现同步的参考频率（f1Mod1 ... modn），并且独立于第一分量的响应（另一个第二半导体类型的第二分量）响应涉及与参考载波信号（3）不同频率的光控制载波信号（6）。通过调制到光控制载波信号（6）上的控制信号（7）来控制第一分量的振幅。

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