-
公开(公告)号：US6101021A
公开(公告)日：2000-08-08
申请号：US349225
申请日：1999-07-08
CPC分类号： H01S3/06791 , H01S3/1109 , H04B10/503 , H04B10/508 , H04B10/564 , G02F2203/26 , H01S3/06754 , H01S3/10038 , H01S3/1121 , H01S3/136
摘要： According to the present invention, damage to a photo-detector disposed in clock signal extractor by means of an optical pulse having an optical power exceeding a rated value is prevented. A ring resonator generates a repetitive, high-frequency optical pulse. Optical branching circuit branches a portion of the optical pulse circulating through ring resonator, while optical branching circuit further branches a portion thereof to protective device. Pumping source generates an excitation light for exciting a rare-earth doped optical fiber. Optical multiplexer couples the optical pulse branched by optical branching circuit, and the excitation light. Upon excitation by means of the excitation light, rare-earth doped optical fiber amplifies and emits the incoming optical pulse. The optical power of the excitation light is adjusted such that the output of rare-earth doped optical fiber reaches a saturation power. Optical switch blocks the incoming optical pulse during the time period when pumping source is not emitting an excitation light, and during a fixed time period following the emission of the excitation light. In this manner, the entry of an excessively large optical pulse exceeding the saturation power into photo-detector at the time of starting up the power source is prevented. Optical attenuator attenuates the optical power of the optical pulse emitted from optical switch to an optical power which the photo-detector is capable of photo-detecting. Photo-detector converts the optical pulse emitted from protective device into an electronic signal; narrow band filter extracts a clock signal from the output of photo-detector; and electric amplifier amplifies the output of narrow band filter, and outputs a clock signal. Phase shifter adjusts the phase of this clock signal; electric amplifier amplifies the output of phase shifter, and outputs a clock signal to optical modulator. Optical modulator modulates the intensity of the light circulating through the ring resonator based on the clock signal, and generates an optical pulse.
-
2.发明授权公开(公告)号：US06947457B2
公开(公告)日：2005-09-20
申请号：US09781049
申请日：2001-02-09
申请人： Rikihiro Iida
发明人： Rikihiro Iida
IPC分类号： H01S5/12 , H01S5/024 , H01S5/0683 , H01S5/0687 , H03M1/66 , H01S3/00
CPC分类号： H01S5/0687 , H01S5/06837 , H01S5/12
摘要： When set values of a wavelength and a output level are input, the input set values (of the wavelength and the output level) are collated with data (A), and then, an approximate temperature of a DFB laser is calculated. The calculated approximate temperature is collated with data (B), and then, a output regulation value of the DFB laser is calculated. The input set value (the output level) is added to the power regulation value, and then, an optical output controlling value is calculated. The optical output level of the DFB laser is controlled. The optical output controlling value and the input set value (of the wavelength) are collated with the data (A), and then, a temperature controlling value of the DFB laser is calculated. Consequently, the temperature of the DFB laser is controlled.
摘要翻译： 当输入波长和输出电平的设定值时，输入设定值（波长和输出电平）与数据（A）进行核对，然后计算出DFB激光的近似温度。 计算的近似温度与数据（B）进行对照，然后计算DFB激光器的输出调节值。 将输入设定值（输出电平）加到功率调节值，然后计算光输出控制值。 控制DFB激光器的光输出电平。 将光输出控制值和输入设定值（波长）与数据（A）进行核对，然后计算DFB激光器的温度控制值。 因此，控制DFB激光器的温度。
-
公开(公告)号：US06590642B2
公开(公告)日：2003-07-08
申请号：US09771869
申请日：2001-01-29
申请人： Rikihiro Iida
发明人： Rikihiro Iida
IPC分类号： G01N2100
CPC分类号： G01M11/3154
摘要： A light source 1 is connected to a first terminal of an optical branch coupler 2, and a first optical sensor 3 is connected to a second terminal. A second optical sensor 4 is connected to a fourth terminal, and a master optical connector 7 is connected to a third terminal. While a measured optical fiber 5 is connected to the master optical connector 7, the power of light received by the first optical sensor 3 and the power of light received by the second optical sensor 4 are detected. The insertion loss and return loss of the optical fiber 5 are computed from the power values of received light detected by a measurement unit 10.
摘要翻译： 光源1连接到光分支耦合器2的第一端子，第一光学传感器3连接到第二端子。 第二光传感器4连接到第四端子，并且主光连接器7连接到第三端子。 当测量的光纤5连接到主光学连接器7时，检测由第一光学传感器3接收的光的功率和由第二光学传感器4接收的光的功率。 根据由测量单元10检测到的接收光的功率值来计算光纤5的插入损耗和回波损耗。
-
公开(公告)号：US06456369B1
公开(公告)日：2002-09-24
申请号：US09491157
申请日：2000-01-26
申请人： Kazuhiro Ohki , Rikihiro Iida
发明人： Kazuhiro Ohki , Rikihiro Iida
IPC分类号： G01N2100
CPC分类号： G02B6/3807
摘要： An apparatus for inspecting a multi-core optical fiber having a plurality of cores arranged in one plane includes a light source 10 having a plurality of optical output terminals which are connected to the incident ends of the respective cores of the multi-core optical fiber and used for putting optical signals into the respective cores thereof; optical signal taking means (12 and 14) for taking out the optical signal emitted from the emission end of each core of the multi-core optical fiber in a time series mode according to the alignment order of emission-side cores of the multi-core optical fiber; optical signal detecting means (16 and 18) for detecting the optical signal thus taken out by the optical signal taking means; and signal processing means 20 for verifying core numbers of the respective cores of the multi-core optical fiber on the basis of the signal patterns of detection outputs of the optical signal detecting means.
摘要翻译： 用于检查具有布置在一个平面中的多个芯的多芯光纤的装置包括具有多个光输出端子的光源10，多个光输出端连接到多芯光纤的各个核的入射端， 用于将光信号放入其各自的芯中; 根据多核发射侧核心的取向顺序，以时间序列模式取出从多芯光纤的每个核心的发射端发射的光信号的光信号采集装置（12和14） 光纤; 光信号检测装置（16和18），用于检测由光信号获取装置取出的光信号; 以及信号处理装置20，用于根据光信号检测装置的检测输出的信号模式来核实多核光纤的各个核的核心号。
-
公开(公告)号：US6111635A
公开(公告)日：2000-08-29
申请号：US280514
申请日：1999-03-30
申请人： Rikihiro Iida , Kazuhiro Ohki
发明人： Rikihiro Iida , Kazuhiro Ohki
CPC分类号： G01M11/332
摘要： An apparatus for verifying the wire gauges of a multi-core optical fiber including a multi-output light source unit having a plurality of output terminals, and an integrated light receiving device having a plurality of light receiving elements which are integrated into one body. In the apparatus, outputs of the multi-output light source unit are inputted into the respective cores of the multi-core optical fiber, rays of output light from the multi-core optical fiber are collectively received by the integrated light receiving device, and a plurality of outputs of the integrated light receiving device are inputted into an operational processor circuit, so that the wire gauges are verified from the light receiving position of the integrated light receiving device.
摘要翻译： 一种用于验证包括具有多个输出端子的多输出光源单元的多芯光纤的线规的装置，以及具有集成在一体内的多个光接收元件的集成光接收装置。 在该装置中，多输出光源单元的输出被输入到多芯光纤的各个芯中，来自多芯光纤的输出光的光线被集成的光接收装置共同接收，并且 集成光接收装置的多个输出被输入到操作处理器电路中，从而从集成光接收装置的光接收位置检验线规。
-
公开(公告)号：US6108465A
公开(公告)日：2000-08-22
申请号：US172255
申请日：1998-10-14
申请人： Rikihiro Iida , Akio Ichikawa , Yoshihiro Kumagai , Yuka Asahina , Masataka Nakazawa , Eiji Yoshida
发明人： Rikihiro Iida , Akio Ichikawa , Yoshihiro Kumagai , Yuka Asahina , Masataka Nakazawa , Eiji Yoshida
CPC分类号： H01S3/06791 , H01S3/06725 , H01S3/08 , H01S3/1109
摘要： The object of the present invention is to provide an optical pulse generator which very stably generates for a long period of time a high cycling frequency optical pulse chain. In order to obtain this object, in a ring type resonator R, the present invention provides an optical path length regulator 14 which performs high precision optical path length adjustment and an optical path length regulator 60 which performs wide range optical path length adjustment, and extracts a clock signal by converting an optical pulse emitted from the ring type resonator R to an electrical signal by a clock extractor 42, detects the frequency difference between a base frequency signal output form a synthesizer 52 by a frequency difference detector 50, and controls said optical path length regulator 14 and said optical path length regulator 60.
摘要翻译： 本发明的目的是提供一种光脉冲发生器，该光脉冲发生器长时间稳定地产生高循环频率的光脉冲链。 为了获得这个目的，在环型谐振器R中，本发明提供一种执行高精度光程长度调节的光路长度调节器14和执行宽范围光程长度调节的光程长度调节器60，并且提取 通过时钟提取器42将从环形谐振器R发射的光脉冲转换为电信号的时钟信号通过频率差检测器50检测由合成器52输出的基频信号之间的频差，并控制所述光 路径长度调节器14和所述光程长度调节器60。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.014 秒)
