Bizarre Patents
Mouse device with a built-in printer
A mouse device for use as an input device of a computer is provided that includes a housing in which recording paper is loadable, and a printer unit provided within the housing for printing on the recording paper print information received from the computer.
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| Number | Title | Issue Date |
| 7990608 | Optical transmission system An optical amplifier reducing gain deviation caused by wavelength arrangement has a first-stage optical amplifying unit, an attenuator, a second-stage optical amplifying unit, an automatic gain controller controlling the first- and second-stage optical amplifying un... | 08/02/2011 |
| 7612936 | Optical amplifying apparatus for wavelength division multiplexed signals A photo amplifying apparatus for amplifying wavelength division multiplexed signals includes a specific wavelength measuring unit for measuring a specific wavelength at a measuring point, a total power measuring unit for measuring all wavelengths at the measuring po... | 11/03/2009 |
| 7362499 | Optical amplifier with pump light source control for Raman amplification A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplificat... | 04/22/2008 |
| 7359112 | Individual band gain equalizer for optical amplifiers A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain devi... | 04/15/2008 |
| 7346280 | Bi-directional long haul/ultra long haul optical communication link A bi-directional configuration is employed to implement a hybrid ultra long haul (ULH)/long haul (LH) optical transmission system. The link carries ULH channels and LH channels in opposite directions in different bands. Raman amplification is employed for the ULH ba... | 03/18/2008 |
| 7334727 | Store management system A store management system executes store operations, employing a communication apparatus In the store, connected with at least one store terminal by way of a first line Inside the store and connected with a server by a second line outside the store. The communicatio... | 02/26/2008 |
| 7324568 | Modulated saturable absorber controlled laser A modulated saturable absorber controlled laser. The laser includes an active medium; a saturable absorber material operationally coupled to the medium to serve as a passive Q switch; and an energy source disposed external to the medium for apply energy to the absor... | 01/29/2008 |
| 7312918 | Optical transmission system having function of correcting noise light due to Raman amplification An optical transmission system wherein a main signal light is amplified by Raman amplification, and noise light (ASS light) produced by the Raman amplification can be corrected with a simple configuration and with high accuracy. The optical transmission system inclu... | 12/25/2007 |
| 7292787 | Selected-wavelength tuning filter and optical add/drop multiplexer The present invention relates to the selected-wavelength tuning apparatus which is provided with an AOTF, a radio-frequency signal generator, an optical detector, and a controller for detecting lights emitted from the AOTF with the optical detector and for controlli... | 11/06/2007 |
| 7289740 | WDM regenerated transmission system A multichannel wavelength-division multiplex fiber optic transmission system includes an optical transmitter and an optical receiver connected by an optical line including at least one optical fiber and at least one set of channel regenerators. Successive regenerato... | 10/30/2007 |
| 7254334 | Multiplex optical communication system A multiplex optical communication system transmitting a multiplex optical signal between terminal equipments each including converters producing optical signals combined to the multiplex optical signal, through repeater equipment including an optical amplifier, unde... | 08/07/2007 |
| 7251071 | Transient control in optical transmission systems In an optical transmission system, operations of certain elements are adjusted in an individualized manner after detecting a change in the total optical power level corresponding to multiple optical channels in a link of the system in order to control transients in ... | 07/31/2007 |
| 7248398 | Method for determining the gain spectrum of a Raman amplifier in a WDM-transmission system The invention relates to a method and device for determining the gain spectrum of a Raman amplifier having an optical amplifier, which is connected in incoming circuit thereto, in a section of a WDM transmission system. A number of spectra are recorded at the output... | 07/24/2007 |
| 7239441 | Raman amplification repeater A Raman amplification repeater using the amplification function of a signal light caused by Raman scattering which occurs when a pumping light is applied to a transmission path fiber, in which signal light power is monitored by means of a plurality of PDs by using w... | 07/03/2007 |
| 7236700 | Scalable and exchangeable erbium doped fiber amplifier for DWDM Erbium doped fiber amplifiers for dense wavelength division multiplexed (DWDM) metro area optical networks may be configured as either high gain amplifiers or power amplifiers. The erbium doped fiber type, length, and pump power level are selected so that the shape ... | 06/26/2007 |
| 7236504 | Stretched-pulse Raman fiber lasers and methods of operating the same A method of operating a stretched-pulse Raman fiber laser includes producing laser radiation gain in a laser cavity using predominantly Raman amplification. Such a stretched-pulse Raman fiber laser has a laser cavity that includes a Negative Group Velocity Dispersio... | 06/26/2007 |
| 7231146 | Optical communication system Communicating a signal includes receiving the signal at a primary device of a switching system, where the primary device is associated with a primary path along which the signal is propagating. A primary overmodulation signal associated with the primary path is gene... | 06/12/2007 |
| 7227681 | Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied An optical amplifier which amplifies a wavelength division multiplexed (WDM) optical signal having a variable number of channels associated with different wavelengths and outputs the amplified WDM optical signal. The optical amplifier includes (a) an optical attenua... | 06/05/2007 |
| 7224516 | Multimode fiber optic amplifier and method of amplifying optical signals A multimode fiber receiver includes a multimode collimator, a multimode fiber optic amplifier and a detector. The collimator receives incoming signals and provides the signals to the amplifier. The amplifier includes plural amplification stages, a limiter, a tunable... | 05/29/2007 |
| 7206512 | Method of controlling optical wavelength division multiplexing transmission apparatus A method of controlling an optical wavelength division multiplexing transmission apparatus achieves stable wavelength division multiplexing optical transmission by switching a control mode of an optical amplification section in accordance with an input state of opti... | 04/17/2007 |
| 7202995 | Method and apparatus for communicating status in a lightwave communication system employing optical amplifiers A repeater node for an optical transmission system provides amplification of optical signals and uses a modulated pump signal to transfer status information about the repeater node to a control system via an optical supervisory signal. The pump signal supplied by a ... | 04/10/2007 |
| 7190510 | Metro wavelength division multiplexing network A metro wavelength division multiplexing network is disclosed and includes a plurality of optical repeaters connected to each other through an optical fiber link, wherein each of the optical repeaters includes a Raman gain medium for Raman-amplifying inputted optica... | 03/13/2007 |
| 7170673 | Optical amplifying repeater apparatus and optical amplifying/repeating transmission system Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals a... | 01/30/2007 |
| 7151895 | Method and system for automatically setting gain for an amplifier in an optical network A method for automatically setting a gain for an amplifier in an optical network includes transmitting, from a source proximate an upstream amplifier coupled to an optical span, a stable signal over the optical span. The method also includes using the stable signal ... | 12/19/2006 |
| 7139119 | Fiber amplifier with suppression of amplified spontaneous emission A fiber amplifier module for amplifying a signal pulse includes an optically pumped double-pass fiber amplifier in which a fiber Bragg grating reflects an amplified pulse in between the first and second amplification passes, and transmits most forward-propagating am... | 11/21/2006 |
| 7136218 | Raman optical amplifier A Raman optical amplifier includes a fiber amplifier for Raman-amplifying an input optical signal to form a primarily-amplified optical signal, and a semiconductor optical amplifier for outputting a Raman pumping light of a predetermined wavelength adapted to Raman-... | 11/14/2006 |
| 7116908 | Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio In the WDM systems, the OSNR and the signal loss among the optical signals are substantially minimized at the receiving terminal to combat the SRS effects. An equal amount of the signal loss is expected for every span in the transmission path so that the optical amp... | 10/03/2006 |
| 7106969 | Optical network terminator An optical network terminator for terminating and reducing the accumulated noise in optical networks, particularly ring based networks. The terminator eliminates problems of noise accumulation from amplifier spontaneous emission (ASE), thermal noise, etc., while pro... | 09/12/2006 |
| 7092635 | Apparatus and method for stimulated Brillouin scattering suppression using supervisory channel The present invention discloses an apparatus for suppressing stimulated Brillouin scattering and the method thereof that a threshold fiber input power is raised in order to prevent loss of an inputted light by stimulated Brillouin scattering being generated in a cas... | 08/15/2006 |
| 7092149 | Input monitoring system for optical amplifying repeater An input monitoring system is provided in an optical amplifying repeater to monitor a level of an optical input signal. A monitored level of the optical input signal is used to detect a fault on an optical transmission path or to control a bias current for a laser d... | 08/15/2006 |
| 7085039 | Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain complementing the Raman gain. The EDFA section preferably includes a highly in... | 08/01/2006 |
| 7079770 | System and apparatus for dropping and adding optical data streams in an optical communication network A system and apparatus for dropping and adding optical data streams in an optical communication network uses a photonic switching fabric for dropping but not adding optical data streams, and uses a combiner external to this photonic switching fabric for combining pa... | 07/18/2006 |
| 7075710 | Raman amplification method, Raman amplification pumping unit, and WDM optical communication system This invention provides a Raman amplification method and the like having a structure which can properly adjust a pumping light power in accordance with a loss change in signal light and can easily flatten a gain spectrum. In the Raman amplification method according ... | 07/11/2006 |
| 7076164 | System and method for measuring power of optical signals carried over a fiber optic link A pilot tone generator receives optical energy from an optical communication medium carrying a plurality of optical signals. Each optical signal carries data modulated at a unique wavelength and further modulated with a unique identification signal. The identificati... | 07/11/2006 |
| 7057149 | Method and system for controlling a secondary amplifier with a primary amplifier in an optical network A method for controlling an amplifier in an optical network includes determining primary pump power information for a primary amplifier and communicating the primary pump power information to a secondary amplifier coupled to the primary amplifier. The method also in... | 06/06/2006 |
| 7058301 | Apparatus and method for planned wavelength addition and removal in a wavelength division multiplexed system A request method for performing optical power management to accomplish planned addition and removal of wavelengths in an optical communications system is disclosed, wherein each wavelength has a path of transmission through the system. The method comprises communica... | 06/06/2006 |
| 7042657 | Filter for selectively processing optical and other signals A multi-section filter is provided for use in processing optical signals and other signals that can be readily projected from one filter section to another. Filters of the invention can be configured in numerous forms, including IIR and FIR filters and both linear a... | 05/09/2006 |
| 7042634 | Optical amplifier An optical amplifier capable of holding the gain profile of the optical amplifier constant includcs a rare-earth doped optical waveguide serving as an amplification medium, a pump light source for exciting the amplification medium, one or more control light source, ... | 05/09/2006 |
| 7039259 | Fiber optical gain equalizer A fiber optical device, whose wavelength profile can be dynamically controlled in real time by the application of control voltages. The device can be used as a fiber optical gain equalizer or a wavelength selective filtering device which is compact, polarization ins... | 05/02/2006 |
| 7027210 | Method and system for determining gain for an optical signal A method for determining gain for an optical signal includes measuring a first power level that is an output power level of an optical signal at a first optical node, communicating the optical signal to a second optical node, and communicating the first power level ... | 04/11/2006 |
