Bizarre Patents
Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7177516 | Far infrared tandem low energy optical power limiter device Two embodiments of a multilayered low energy optical power limiter device are disclosed which protect thermal sensors against laser threats in the far infrared spectral region. One limiter device has multiple layers in order from the incoming radiation side an antir... | 02/13/2007 |
| 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 |
| 7072099 | Relative intensity noise (RIN) reduction in fiber-based raman amplifier systems An arrangement for reducing the effects of pump signal relative intensity noise (RIN) in a Raman fiber amplifier. A portion of the output from a pump laser source is applied as an input to a compensating, lower power laser module, where fluctuations in the output po... | 07/04/2006 |
| 7068423 | Low cost flexible automated optical power management Circuits and systems for use in monitoring and adjusting an optical signal strength of an optical data transmission system. A closed feedback loop which automatically controls an optical device's output uses an analog operational amplifier based circuit instead of a... | 06/27/2006 |
| 7054058 | Pumping source having a number of pump lasers for Raman amplification of a WDM signal with the aid of minimized four-wave mixing A pumping source for Raman amplification of an optical wavelength-division multiplex signal which has a number of pump lasers with different pumping wavelengths in each case. The pumping wavelengths are selected in such a way that mixing products from a four-wave mi... | 05/30/2006 |
| 7002734 | Pre-amplifier gain setting method utilizing ASE light and WDM optical transmission apparatus employing the method A WDM optical transmission apparatus is disclosed utilizing ASE light. The WDM optical transmission apparatus includes a pre-amplifier having two control modes consisting of ALC mode in which the gain of an optical amplifier is controlled such that the total output ... | 02/21/2006 |
| 6992814 | Wide-band raman amplifiers A method of improving performance of an optical amplifier and an optical fiber amplifier including an optical fiber having a zero-dispersion wavelength, and at least one Raman pump that provides pump power to the optical fiber at a predetermined wavelength to allow ... | 01/31/2006 |
| 6989923 | Optical amplifier having automatic gain control with improved performance A method and apparatus is provided for automatically controlling the gain of an optical amplifier. The method begins by generating a first control signal based on a feed-forward error signal and a second control signal based on the feedback error signal. Next, the p... | 01/24/2006 |
| 6985285 | Optical transmission system using Raman amplification An optical transmission system that can reduce a difference of Raman gain between each of upstream and downstream lines, in a system configuration in which Raman amplification is performed for both the upstream and downstream lines by a common Raman amplifier. Trans... | 01/10/2006 |
| 6985283 | Fiber-optic compensation for dispersion, gain tilt, and band pump nonlinearity An apparatus and method are described for combining optical amplification and dispersion compensation in a Raman amplifier. A Dispersion-Managing Raman Amplifier (DMRA) combines Raman amplification with dispersion compensation by selecting the length and dispersion ... | 01/10/2006 |
| 6980576 | Pump distribution network for multi-amplifier modules An integrated optical device is provided for distributing optical pump energy. The device includes at least one input port for receiving optical energy, a plurality of output ports, and a user configurable optical network coupled to the input port for distributing t... | 12/27/2005 |
| 6977770 | Optical amplifier and control method therefor The optical amplifier according to the present invention includes a first optical amplifying unit, a second optical amplifying unit, a variable optical attenuator optically connected between the first and second optical amplifying units and a first control unit for ... | 12/20/2005 |
| 6977772 | Direct optical amplifier correlating average level of main signal with level of pilot tone signal The direct optical amplifier of the present invention monitors not only a pilot tone signal but also the main signal, and when the pilot tone signal loses relation to the main signal, re-establishes the relation between the level of the pilot tone signal and the ave... | 12/20/2005 |
| 6977769 | Pump light source device for optical Raman amplification and optical Raman amplification system using the same Disclosed are: a pump light source device for Raman amplification for outputting a pump light for causing signal lightwaves introduced into an optical fiber to undergo Raman amplification therein, the device including two light sources, a polarization beam combiner ... | 12/20/2005 |
| 6967769 | Optical transmission systems and optical amplifiers for use therein Optical systems of the present invention generally include at least one optical amplifier having a first pump source configured to supply power to said amplifier via a first pumping paths. A second pumping path is provided to supply power to the amplifier from a sec... | 11/22/2005 |
| 6967768 | Optical communication system having dynamic gain equalization An optical communication device, and related method, are provided for reducing ripple in WDM systems. In particular, the optical communication device includes a dynamic gain equalization (DGE) circuit is coupled to an optical communication path carrying the WDM opti... | 11/22/2005 |
| 6965470 | Adaptive control of power transients Power transient control in an optical network by power measurement and prediction with a simple-to-compute model to drive an optical filter control. ... | 11/15/2005 |
| 6959150 | Optical method and system for measuring in-band crosstalk in Raman amplifiers A method for measuring in-band crosstalk in an optical amplifier, such as a Raman amplifier, in which a modulated optical signal is generated using an input modulator. The modulated optical signal is passed through the optical amplifier to obtain a first output opti... | 10/25/2005 |
| 6954303 | Multi-stage optical amplifier and broadband communication system A multi-stage optical amplifier that has an optical fiber with a first length of amplifier fiber and a second length of amplifier fiber. The optical fiber is configured to be coupled to a signal source that produces at least a signal wavelength λs and a ... | 10/11/2005 |
| 6954304 | Raman amplifier A Raman amplifier for an optical transmission system. A light source unit generates pumping light to amplify wavelength-multiplexed signal light having a plurality of wavelengths including a wavelength band of the signal light. A transmission path propagates the sig... | 10/11/2005 |
| 6954305 | Optical amplifier and optical transmission system using it An optical amplifier 1 is constructed using an amplification optical waveguide in which a first amplification optical fiber 10 and a second amplification optical fiber 20 are connected in series. A P/Al-codoped EDF 10 excellent in noise c... | 10/11/2005 |
| 6952309 | Optical amplifier and optical amplification method A optical filter has a loss spectrum whose gradient dL/dλ of a loss L (dB) with respect to the wavelength λ (nm) is variable in the wavelength band of multiplexed signal light. A control circuit detects each power of signal light components demultiplexed by an opt... | 10/04/2005 |
| 6952308 | Multi-stage bidirectional optical amplifier A multi-stage bidirectional optical amplifier amplifies counter-propagating signals at the same time, and includes two single-stage bidirectional optical amplifiers, two multiple reflection suppression means, and a mid-stage component. ... | 10/04/2005 |
| 6947208 | Optical fiber amplifier with fully integrated pump source An amplifying optical element for use within an optical fiber communication system is disclosed which includes a doped optical fiber, an optical excitation source which is physically integrated with and immediately adjacent to and surrounding doped optical fiber, th... | 09/20/2005 |
| 6943940 | Optical amplifier for amplifying a wavelength division multiplexed (WDM) light including light in different wavelength bands An optical amplifier, or optical repeater, for amplifying wavelength division multiplexed (WDM) light. A first demultiplexer demultiplexes the WDM light into first and second lights corresponding to different wavelengths in the WDM light. First and second optical am... | 09/13/2005 |
| 6943936 | Co-propagating Raman amplifiers A Raman amplifier includes a Raman gain fiber comprising a length of high-dispersion gain fiber and operable to receive at least one optical signal. The Raman amplifier also includes at least one pump source capable of generating at least one pump signal that co-pro... | 09/13/2005 |
| 6943939 | Optical amplifier with damped relaxation oscillation An optical amplifier with damped relaxation oscillation. A large distance between mirrors in a VLSOA increases damping for the relaxation oscillation. Alternatively, a feedback loop damps out relaxation oscillations. ... | 09/13/2005 |
| 6937389 | Optical communication systems and optical amplifiers employing periodic combiners and methods An optical system including an optical amplifier having an optical coupler adapted for receiving and coupling pump radiation from a plurality of pump radiation sources. The gain profile of the amplifier being modified to employ optical couplers that are periodic in ... | 08/30/2005 |
| 6937387 | System and method for automatic recovery from a control loop failure A voltage potential at a selected one or more inputs is controlled in order to produce a gain associated with an optical amplifier. One or more characteristics associated with a feedback loop coupled to the optical amplifier may be stored. A signal may be communicat... | 08/30/2005 |
| 6930823 | Optical transmission method and optical transmission system utilizing Raman amplification The present invention has an object to provide an optical transmission technology using Raman amplification wherein a supervisory signal transferred among a plurality of optical transmission apparatuses is superimposed on a main signal light by using a pumping light... | 08/16/2005 |
| 6930824 | Optical amplifier which compensates for dispersion of a WDM optical signal The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the... | 08/16/2005 |
| 6930825 | Method and apparatus for sharing pump energy from a single pump arrangement to optical fibers located in different fiber pairs An optical repeater is provided that includes at least four optical amplifiers each supplying optical amplification to an optical signal traveling in a different unidirectional optical fiber that collectively form at least two bi-directional pairs of optical fibers.... | 08/16/2005 |
| 6927896 | Raman optical amplification system In a Raman optical amplification system in which WDM optical signals comprising two or more signal bands are transmitted in a transmission line, and in which a plurality of pumping lightwaves are introduced into said transmission line so that WDM optical signals in ... | 08/09/2005 |
| 6927897 | Optical amplifier A method of amplifying a signal light includes initially multiplexing a signal light and a pumping light, initially amplifying the signal light initially demultiplexing so as to separately output the amplified signal light and the pumping light, and modifying a wave... | 08/09/2005 |
| 6924926 | Laser diode pump sources A laser diode pump includes a plurality of laser diodes each capable of generating a lasing wavelength. The laser diode pump further includes at least one wavelength combiner operable to combine the plurality of lasing wavelengths generated by the plurality of laser... | 08/02/2005 |
| 6924928 | Amplification device utilizing thulium doped modified silicate optical fiber A device amplifies light at wavelengths in the vicinity of 1420-1530 nm, using thulium doped silica-based optical fiber. This wavelength band is of interest as it falls in the low-loss optical fiber telecommunications window, and is somewhat shorter in wavelength th... | 08/02/2005 |
| 6924927 | Optical transmitting apparatus and optical repeating apparatus In an optical amplifying technique using remote pumping, an optical transmitting apparatus and an optical repeating apparatus are provided. An optical repeating apparatus comprises a first optical transmitting unit, a first loopback unit, a second optical transmitti... | 08/02/2005 |
| 6922281 | Erbium-doped fiber amplifier and integrated module components An EDFA with integrated input and output modules is presented. The integrated input module has a packaged pump laser diode mounted to the metal EDFA package to provide a heat sink for the pump laser diode which sends the pump laser light over a optical fiber section... | 07/26/2005 |
| 6919986 | Nonlinear polarization amplifiers in nonzero dispersion shifted fiber A broadband fiber transmission system includes a transmission line with at least one zero dispersion wavelength λo and transmits an optical signal of λ. The transmission line includes a distributed Raman amplifier that amplifies the optical signal throu... | 07/19/2005 |
| 6917466 | Raman amplifier system, apparatus and method for identifying, obtaining and maintaining an arbitrary Raman amplification performance A Raman amplifier, system and method using a plurality of pumps configured to pump light into an optical fiber so as to Raman-amplify an optical signal propagating through the optical fiber. The Raman amplifier also includes an optical coupler configured to opticall... | 07/12/2005 |
