| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Method and apparatus for checking continuity of optic transmission | US345138 | 1989-04-28 | US4994675A | 1991-02-19 | Paul Levin; Barry Minnerly |
| An apparatus for checking continuity of fiber optic links from source to receiver before enabling the source delivers full power so as to thereby prevent eye damage to personnel and provide a supervisory signal to the system user that the link elements are intact and functioning. The apparatus includes a transmitter, a receiver and a detector for detecting that an optical transmission between the transmitter and receiver can be effected. | ||||||
| 162 | Locally nulled sine-wave total power alarm for intrusion detecting optical communications systems | US209144 | 1988-06-16 | US4903339A | 1990-02-20 | Harvey E. Solomon |
| An intrusion detection optical communication system modifies the original data signal to include a synchronizing periodic waveform. The receiver generates an inverted synchronizing periodic waveform signal corresponding with the transmitted signal to null the same under normal operation. When an intrusion in the optical system arises, power is extracted from the system and the nulled condition is disrupted. The disruption is detected and activates an alarm circuit when the disruption is above a threshold value. | ||||||
| 163 | Loss of optical input circuit | US248310 | 1988-09-19 | US4893002A | 1990-01-09 | Miklos J. Kollanyi |
| A loss of optical input detector is disclosed disposed to receive a signal voltage from a fiber-optic receiver indicating that the optical input has dropped below a preset threshold. The detector includes a voltage follower connected to the fiber-optic receiver which passes to the detector circuit the signal voltage. A comparator circuit receives the signal voltage and compares it to a reference voltage. When the signal voltage is greater than the reference voltage the comparator produces and applies to an alarm circuit a positive voltage signal. This positive voltage signal turns on the alarm circuit. The alarm circuit provides a visual alarm indication and a logic signal to a controller interface indicating a loss of the optical input signal. | ||||||
| 164 | VCSEL BASED OPTICAL LINKS IN BURST MODE | US16220782 | 2018-12-14 | US20190123830A1 | 2019-04-25 | Alessandro Cevrero; Daniel M. Kuchta; Christian I. Menolfi; Thomas E. Morf; Ilter Özkaya; Marc A. Seifried |
| Devices and methods are provided to reduce the wake-up time of a Vertical Cavity Surface Emitting Laser (VCSEL) used in a data communication link. For example, in one aspect, a method for optical communications includes, in an optical communication device including a light-emitting device, applying a bias current to the light-emitting device and transmitting a pulse to the light-emitting device before transmitting a preamble signal or data signal to the light-emitting device, wherein the pulse has a voltage greater than a highest voltage of the preamble signal or data signal. | ||||||
| 165 | VCSEL BASED OPTICAL LINKS IN BURST MODE | US15478789 | 2017-04-04 | US20180287707A1 | 2018-10-04 | Alessandro Cevrero; Daniel M. Kuchta; Christian I. Menolfi; Thomas E. Morf; Ilter Özkaya; Marc A. Seifried |
| Devices and methods are provided to reduce the wake-up time of a Vertical Cavity Surface Emitting Laser (VCSEL) used in a data communication link. For example, in one aspect, a method for optical communications includes, in an optical communication device including a light-emitting device, applying a bias current to the light-emitting device and transmitting a pulse to the light-emitting device before transmitting a preamble signal or data signal to the light-emitting device, wherein the pulse has a voltage greater than a highest voltage of the preamble signal or data signal. | ||||||
| 166 | COMMUNICATION DEVICE AND COMMUNICATION SYSTEM | US15545606 | 2016-04-12 | US20180041286A1 | 2018-02-08 | Toshihisa Hyakudai; Masanari Yamamoto; Takeshi Ogura; Tsugita Komatsu; Hiroshi Morita; Gen Ichimura |
| A communication device includes a transmitter configured to generate a data signal, and a controller configured to stop an operation of the transmitter in response to an optical transmission stop instruction. The optical transmission stop instruction preferably has a predetermined bit pattern. | ||||||
| 167 | Communication light visualization module | US15255045 | 2016-09-01 | US09778431B2 | 2017-10-03 | Kanako Suzuki; Mikio Ohkoshi |
| A communication light visualization module includes multiple communication light visualization adapters into which an optical connector is fitted and to which the optical connector is optically connected and a housing that houses the communication light visualization adapters in an arrangement manner. Each of the communication light visualization adapters includes a light extraction hole from which part of communication light transmitted through an optical communication path is extracted. The housing includes a common protection cover that collectively covers the light extraction holes of the plurality of communication light visualization adapters or collectively renders the light extraction holes uncovered. | ||||||
| 168 | Safety-enhanced laser array | US14815857 | 2015-07-31 | US09673893B2 | 2017-06-06 | Patrick J. Decker; Ashok V. Krishnamoorthy; Xuezhe Zheng; Ola Torudbakken |
| When an unsafe port with a loss of signal is detected, a transceiver may enable one laser in a group of lasers associated with the unsafe port and may disable the remaining lasers. Then, the transceiver may instruct a transmitter associated with the one laser to transmit an optical signal on the unsafe port using a reduced transmit power that is less than a threshold value associated with the Class 1 conditions and at a different time than enabled lasers in other groups of lasers. Alternatively, for a safe port on which valid communication is received, the transceiver may enable lasers in a group of lasers associated with the safe port. Then, the transceiver may instruct transmitters associated with the lasers in this group of lasers to transmit optical signals on the safe port using a normal transmit power for the lasers that is greater than the threshold value. | ||||||
| 169 | COMMUNICATION LIGHT VISUALIZATION MODULE | US15255045 | 2016-09-01 | US20170068063A1 | 2017-03-09 | Kanako SUZUKI; Mikio OHKOSHI |
| A communication light visualization module includes multiple communication light visualization adapters into which an optical connector is fitted and to which the optical connector is optically connected and a housing that houses the communication light visualization adapters in an arrangement manner. Each of the communication light visualization adapters includes a light extraction hole from which part of communication light transmitted through an optical communication path is extracted. The housing includes a common protection cover that collectively covers the light extraction holes of the plurality of communication light visualization adapters or collectively renders the light extraction holes uncovered. | ||||||
| 170 | WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM | US15237051 | 2016-08-15 | US20170047990A1 | 2017-02-16 | Akihisa KAWAGUCHI; Koji TANONAKA; Tonoyuki SUZUKI; Reiko SATO; Akihide KASEZAWA; Shoichi MURAKAMI; Ryo KARUBE |
| In a wavelength division multiplexing transmission system, a controller of a relay node of a post-stage notifies level decrease information to a transmission node, upon detecting a decrease in a level of a wavelength in a wavelength multiplex signal received from the transmission node of a pre-stage by the optical channel monitor of the transmission node. The controller of the transmission node of the pre-stage determines that a failure occurs in the wavelength of the transponder of the transmission node, upon detecting a decrease in the level of the wavelength in the wavelength multiplex signal transmitted to the relay node by the optical channel monitor of the transmission node and upon receiving the level decrease information for the wavelength from the relay node. Therefore, a wavelength channel failure in the transponder can be determined in a preferable manner. | ||||||
| 171 | Safety and power control arrangement and method for optical fiber communication systems | US13062575 | 2009-06-02 | US09385805B2 | 2016-07-05 | Robert Schimpe |
| Safety and power control arrangement and method for optical communication apparatus, where a first circuit pack emitting an optical signal (OS1) and at least a second and a third circuit pack (2, 3) are connected in series via optical fibers (4, 5). A power monitor (26) connected to an output (27) of the at least second circuit pack (2) reduces the signal power (PW2) output from the second circuit pack (2) to a pre-determined safe value if a loss-of signal monitor (34) of a next circuit pack (3) forwards a loss-of-signal control signal (LOC3). The advantage is that the maximum allowable value is achieved at the input of an interrupted fiber section and the non-interrupted circuits can still receive the optical signals with a reasonable power level. | ||||||
| 172 | Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition | US14494823 | 2014-09-24 | US09184850B2 | 2015-11-10 | Lewis B. Aronson; Lucy G. Hosking |
| An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the particular memory address received from the host. The optoelectronic transceiver may further include comparison logic configured to compare the digital values with limit values to generate flag values, wherein the flag values are stored as digital values in the memory. | ||||||
| 173 | Optical network terminal | US13494508 | 2012-06-12 | US08897636B2 | 2014-11-25 | Chang Il Yoon |
| Disclosed herein is an optical network terminal. The Optical Network Terminal (ONT) includes a laser diode for generating an optical signal to be transmitted to the OLT. A laser diode driving unit supplies driving current required for light emission of the laser diode. A driving current detection unit detects the driving current. A light emission time determination unit calculates a light emission time of the laser diode depending on a time for which the driving current is detected, and outputs a power control signal including information about results of a comparison between the light emission time of the laser diode and a preset reference time. A power supply voltage control unit interrupts a power supply voltage of the laser diode driving unit when the power control signal includes information indicating that the light emission time of the laser diode is longer than the reference time. | ||||||
| 174 | OPTICAL AMPLIFICATION DEVICE AND METHOD OF CONTROLLING OPTICAL MODULE | US14257298 | 2014-04-21 | US20140340739A1 | 2014-11-20 | Mitsuya Kawashita; Jinlin Zhang; Eiji Maeda; Shota Mori |
| An optical amplification device includes: an optical module that outputs an amplified light; and a controller that makes the optical module emit a light when an emission command is input into the controller, wherein the controller cancels an inputting of the emission command until a predetermined time passes, when a protection for forbidding a light emission of the optical module is canceled. | ||||||
| 175 | Optical safety implementation in protection switching modules | US13740484 | 2013-01-14 | US08879903B2 | 2014-11-04 | Cinzia Ferrari; Alberto Tanzi |
| Optical safety functions are incorporated into protection switching modules which maintain redundant pathways to avoid interruptions in optical network connections. The optical safety functions which lower optical power levels upon interruptions of optical connections are effectively combined with protection switching procedures which are also triggered by interruptions in optical network connections. The interoperation of protection and safety processes keep optical power levels below hazardous levels at system points which might be accessible to human operators. | ||||||
| 176 | POWER MANAGEMENT IMPLEMENTATION IN AN OPTICAL LINK | US14182492 | 2014-02-18 | US20140161467A1 | 2014-06-12 | Klaus D. Giessler; Christine M. Krause |
| An optical link power management scheme takes the best advantage of a dynamic connection environment, where ports may be connected and disconnected at any time, and where data flows may start and stop as needed by the applications using the high speed data links Power consumption is optimized, eye safety standards are met, and robust connection detection is preserved. | ||||||
| 177 | Network system with energy efficient fiber port | US13113442 | 2011-05-23 | US08731408B2 | 2014-05-20 | Eric W. Tolliver |
| An approach for saving power in a fiber ports of a network system is provided. An instance of a period of inactivity for a fiber port of the network system is determined. Power delivery to a transmit laser of an SFP (small form-factor pluggable) device of the fiber port is terminated during at least a portion of the period of inactivity. Power delivery to the SFP device is maintained while power delivery to the transmit laser is terminated. | ||||||
| 178 | Method of Monitoring an Optoelectronic Transceiver with Multiple Flag Values for a Respective Operating Condition | US13948082 | 2013-07-22 | US20130308936A1 | 2013-11-21 | Lewis B. Aronson; Lucy G. Hosking |
| An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the particular memory address received from the host. The optoelectronic transceiver may further include comparison logic configured to compare the digital values with limit values to generate flag values, wherein the flag values are stored as digital values in the memory. | ||||||
| 179 | Eye safety and interoperability of active cable devices | US12112214 | 2008-04-30 | US08526810B2 | 2013-09-03 | Christopher R. Cole; Lewis B. Aronson; Darin James Douma |
| An integrated cable configured to communicate over much of its length using one or more optical fibers includes an electrical connector at least one end. The electrical connector at a first end of the integrated cable and an optoelectronic device coupled to or included in the other end of the integrated cable may utilize a bidirectional status link to transmit status data to each other. If the status data indicates that optical signals transmitted over the optical channels between the two devices are not potentially exposed to view, the two devices may operate above nominal eye safety limits. Otherwise, the two devices may operate at or below nominal eye safety limits. If the second optoelectronic device is not status-link enabled, the first optoelectronic device may operate at or below nominal eye safety limits. | ||||||
| 180 | Optoelectronic transceiver with multiple flag values for a respective operating condition | US13336963 | 2011-12-23 | US08515284B2 | 2013-08-20 | Lewis B. Aronson; Lucy G. Hosking |
| An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the particular memory address received form the host. The optoelectronic transceiver may further include comparison logic configured to compare the digital values with limit values to generate flag values, wherein the flag values are stored as digital values in the memory. | ||||||
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