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1. 发明专利

JP2001156763A PREAMBLE ADDITION CIRCUIT AND OPTICAL TRANSMITTER- RECEIVER 失效
公开(公告)号：JP2001156763A
公开(公告)日：2001-06-08
申请号：JP33750999
申请日：1999-11-29
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： H04B10/60 , H04B10/07 , H04B10/272 , H04B10/40 , H04B10/50 , H04B10/564 , H04B10/69 , H04L7/10 , H04L12/44 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To provide an optical transmitter-receiver where a preamble is generated by hardware so as to reduce software development man-hours and that is applicable to an optical fiber communication network provided with a passive optical multiplexing path. SOLUTION: The preamble addition circuit of this invention is provided with 1st and 2nd delay circuits that delay both a transmission request signal and data to be sent by a prescribed time and with a device that generates a synchronizing signal for the prescribed delay time and also with a device that is triggered by the transmission request signal to continue transmission for a 2nd prescribed time and with a mechanism that transmits an idle signal as its control when the transmission request signal goes to a low level within the 2nd prescribed time.

2. 发明专利

JP2003008443A Multiplexer and inverse multiplexer 审中-公开
标题翻译：多路复用器和反相多路复用器
公开(公告)号：JP2003008443A
公开(公告)日：2003-01-10
申请号：JP2001189084
申请日：2001-06-22
申请人： Photonixnet Corp , フォトニクスネット株式会社
发明人： OTA TAKESHI
IPC分类号： H03M7/14 , H03M9/00 , H04J3/00 , H04J3/04 , H04J3/06 , H04L25/49
CPC分类号： H04J3/0602 , H04J3/047 , H04J3/07
摘要： PROBLEM TO BE SOLVED: To provide a multiplexer that avoids a word alignment device of a serial parallel converter from being malfunctioned by a K28.5 code included in the lower-order 10-bits when multiplexing a plurality of gigabit Ethernet signals. SOLUTION: The gigabit Ethernet signals 3a, 4a are fed to optical transceivers 11, 12, serial parallel circuits 13, 14, and elastic smoothers 15, 16, where the clock speed is adjusted. A code swapper 17 preserves only the K28.5 signal of the uppermost gigabit Ethernet signal, converts the K28.5 signals of the other gigabit Ethernet signals into other code and gives the result to a serial parallel converter 18, which outputs the code as a multiplex signal. In the case of decoding the multiplex signal, the above mentioned other code is converted into the K28.5 signal.
摘要翻译：要解决的问题：提供一种多路复用器，其在多路复用多个千兆位以太网信号时，避免串行并行转换器的字对齐装置在低位10位中包含的K28.5码故障。解决方案：将千兆位以太网信号3a，4a馈送到光收发器11,12，串行并行电路13,14以及调整时钟速度的弹性平滑器15,16。代码交换器17仅保留最上面的千兆以太网信号的K28.5信号，将其他吉比特以太网信号的K28.5信号转换为其他代码，并将结果提供给串行并行转换器18，该串行并行转换器18将代码输出为复用信号。在对多路复用信号进行解码的情况下，将上述其他代码转换为K28.5信号。

3. 发明专利

JP2001154045A OPTICAL INTEGRATING CIRCUIT 失效
公开(公告)号：JP2001154045A
公开(公告)日：2001-06-08
申请号：JP33351199
申请日：1999-11-24
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： G02B6/122
摘要： PROBLEM TO BE SOLVED: To reduce the size of an optical integrating circuit board on a flat surface including a curve optical waveguide in the circuit and also to reduce the loss of the optical integrated circuit on the flat surface, including the curve optical waveguide in the circuit. SOLUTION: This curve optical waveguide branched from a linear optical waveguide is divided into plural rectangular waveguides, and moreover the width of the cross section of the rectangular waveguide is made narrower than that of the cross section of the of the linear part of the optical waveguide.

4. 发明专利

JP2003185876A WAVELENGTH DIVISION MULTIPLEXER AND WAVELENGTH DIVISION MULTIPLEXING SYSTEM 审中-公开
公开(公告)号：JP2003185876A
公开(公告)日：2003-07-03
申请号：JP2002224035
申请日：2002-07-31
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： G02B6/293 , H04B10/00 , H04B10/27 , H04B10/29 , H04J14/02 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To realize a wavelength division multiplexing system using a wavelength division multiplexer with small isolation. SOLUTION: A wavelength division multiplexer is used in which isolation between neighboring channels (wavelengths) is low, but in which isolation between one channel and the channel adjacent to the neighboring channel is sufficiently large. Bi-directional transmission is performed by varying the wavelength on one optical fiber, with transmission and reception alternated by each channel. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2003087194A OPTICAL TRANSMITTER-RECEIVER AND COMMUNICATION TRANSMISSION MEDIUM CONVERTER 审中-公开
公开(公告)号：JP2003087194A
公开(公告)日：2003-03-20
申请号：JP2001272871
申请日：2001-09-10
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： H04B10/556 , H04B10/079 , H04B10/29 , H04B10/00
摘要： PROBLEM TO BE SOLVED: To avoid adverse influence on human eyes though an optical fiber coming from an optical transmitter-receiver of a transmission system which never transmits an optical signal in an idling time and to easily discriminate re-mounting (connection) of the optical fiber. SOLUTION: When there is no data to be transmitted, an intermittent pulse is sent as a link signal. when any signal from an opposite side can not be received, a first dummy signal is transmitted. When the first dummy signal is received, a second dummy signal is transmitted. When the link signal or a packet is received, a normal signal including the link signal is transmitted.

6. 发明专利

JP2001186154A COMMUNICATION NETWORK AND COMMUNICATION SYSTEM 失效
公开(公告)号：JP2001186154A
公开(公告)日：2001-07-06
申请号：JP36446699
申请日：1999-12-22
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： H04L12/413 , H04L12/40
摘要： PROBLEM TO BE SOLVED: To accommodate communication capacity by a packet, where real-time performance is a requirement and a packet, where the real-time performance is not a requirement. SOLUTION: A master transmission channel is controlled in time division manner, a terminal station to which divided time slots are assigned uses only required time slots and releases the remaining time slots. The other stations share remaining time slots, in accordance with the channel scrambling type protocol.

7. 发明专利

JP2003198484A OPTICAL REPEATER/AMPLIFIER AND WAVELENGTH MULTIPLEXER 审中-公开
公开(公告)号：JP2003198484A
公开(公告)日：2003-07-11
申请号：JP2001394016
申请日：2001-12-26
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： H01S3/06 , H01S3/067 , H01S3/23 , H04B10/275 , H04B10/29 , H04B10/297 , H04J14/00 , H04J14/02 , H04B10/16 , H04B10/17
摘要： PROBLEM TO BE SOLVED: To provide an optical repeater/amplifier which is suitable for an optical fiber communication network changing the wavelength in incoming and outgoing with one optical fiber and performing bidirectional transmission and also to provide a wavelength multiplexer. SOLUTION: An incoming light signal and an outgoing light signal are separated by wavelength routing through the use of three-port devices 1, 2, 5 and 6 and taken out. Then they are multiplexed in wavelength and collectively amplified by an optical amplifier 3. The collectively amplified light signal is guided in a correct direction again by wavelength routing. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2003021723A Mode cut filter and optical transmitter-receiver 审中-公开
标题翻译：模式切换滤波器和光发射机接收器
公开(公告)号：JP2003021723A
公开(公告)日：2003-01-24
申请号：JP2001205750
申请日：2001-07-06
申请人： Photonixnet Corp , フォトニクスネット株式会社
发明人： OTA TAKESHI
IPC分类号： G02B6/30 , G02B6/00 , G02B6/14 , G02B6/34 , G02B6/42 , H04B10/25 , H04B10/291 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/02
CPC分类号： G02B6/14 , G02B6/30 , G02B6/4246
摘要： PROBLEM TO BE SOLVED: To realize a short wave optical transmitter-receiver which is usable in an optical fiber having a single transmission mode in a long wavelength region.
SOLUTION: An optical transmitter-receiver furnished with a mode cut filter which is composed by connecting an optical fiber or an optical waveguide having a single transmission mode for a long wavelength (wavelength is 1.2 to 1.7 μm) and an optical fiber or an optical waveguide having a single transmission mode for short wavelength (wavelength is 0.6 to 1.0 μm) is provided. With this composition, a high order mode which is generated when a short wavelength light is transmitted in the optical cable having a single transmission mode for long wavelength is eliminated, thus a wide band transmission is performed by using an inexpensive short wavelength optical transmitter-receiver.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：实现在长波长区域具有单一传输模式的光纤中可用的短波光发射机 - 接收机。解决方案：一种配备有模式截止滤波器的光发射机 - 接收机，其通过连接具有长波长（波长为1.2至1.7μm）的单一传输模式的光纤或光波导和光纤或光波导具有短波长（波长为0.6〜1.0μm）的单一透射模式。利用这种构成，消除了在具有长波长的单一传输模式的光缆中传输短波长光时产生的高阶模式，因此通过使用廉价的短波长光发射机 - 接收机。

9. 发明专利

JP2001156718A OPTICAL SIGNAL TRANSMITTER 失效
公开(公告)号：JP2001156718A
公开(公告)日：2001-06-08
申请号：JP33750899
申请日：1999-11-29
申请人： PHOTONIXNET CORP
发明人： OTA TAKESHI
IPC分类号： H04B10/572 , H04B10/079 , H04B10/293 , H04B10/564 , H04B10/14
摘要： PROBLEM TO BE SOLVED: To provide an optical signal transmitter provided with an output control (APC) device applicable even to an optical fiber communication network system employing a passive optical branch that can conduct output control without the need for a high-speed APC circuit. SOLUTION: The optical signal transmitter is provided with the APC device that conducts a control operation to approach an optical output of a light, source to a setting value only when a transmission request is received. Furthermore, the optical signal transmitter keeps the control operation of an optical output when no transmission request is received. Moreover, the setting initial value of the optical output is set to a maximum value within a range in which the light source is not destroyed.

10. 发明专利

JP2004056019A Light source and optical amplifier 审中-公开
标题翻译：光源和光放大器
公开(公告)号：JP2004056019A
公开(公告)日：2004-02-19
申请号：JP2002214473
申请日：2002-07-23
申请人： Photonixnet Corp , フォトニクスネット株式会社
发明人： OTA TAKESHI
IPC分类号： H01S3/06 , H01S3/10
摘要： PROBLEM TO BE SOLVED: To solve the following problems that a DFB laser requires a temperature control mechanism and is expensive, and the wavelength of it is not easy to change, since it causes cost increases for production and stock control. SOLUTION: The light from a excitation light source 1 is incident to an erbium doped optical fiber 3, acting as a gain medium, by a WDM optical fiber coupler 2. The excited erbium doped optical fiber 3 generates a gain of optical amplification in a range of band width of about 30 nm. The erbium doped optical fiber 3, a dismountable dielectric thin film filter 4, an optical fiber coupler 5 acting as an output coupler, an optical fiber 6 and the WDM optical fiber coupler 2 form a closed loop so that an optical signal only of the wavelength transmitted through the dielectric thin film filter 4 is laser-oscillated. The thin film filter 4 has low temperature dependency for wavelength, so that the temperature control mechanism and a wavelength monitoring mechanism can be eliminated. Only by replacing the dielectric thin film filter 4, a laser of different wavelength is employed, so that cost of production and inventory is reduced. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题为了解决DFB激光器需要温度控制机构并且昂贵的问题，并且其波长不容易改变，因为它导致生产和库存控制的成本增加。解决方案：来自激发光源1的光通过WDM光纤耦合器2入射到作为增益介质的掺铒光纤3.激发的掺铒光纤3产生光放大增益在约30nm的带宽范围内。掺铒光纤3，可拆卸电介质薄膜滤光器4，作为输出耦合器的光纤耦合器5，光纤6和WDM光纤耦合器2形成闭环，使得只有波长的光信号通过电介质薄膜滤波器4透射的激光振荡。薄膜滤光器4对波长的温度依赖性低，能够消除温度控制机构和波长监视机构。仅通过置换介电薄膜滤光器4，就采用不同波长的激光，从而降低了生产成本和库存。版权所有（C）2004，JPO

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