Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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 |
| 8174757 | Wavelength determining apparatus, method and program for thin film thickness monitoring light A multi-layer optical thin film filter comprising plural deposited optical thin films, wherein optical thin film thickness for each of said optical thin films has a predetermined wavelength spectrum in a predetermined gain equalization band and a predetermined wavel... | 05/08/2012 |
| 8094369 | Regulatable optical amplifier, and method for regulating an optical amplifier The invention relates to a regulatable optical amplifier which has at least two series-connected amplifier groups, each amplifier group having a regulating device. Connected upstream of the optical amplifier is a power monitor device for detecting changes in the inp... | 01/10/2012 |
| 8004752 | Multi-wavelength light amplifier A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from... | 08/23/2011 |
| 7999999 | Article comprising a multichannel optical amplified transmission system with functional upgrade capabilities and universal modules A universal inline functional module for operation with nonzero average gain G≠0dB over a bandwidth is provided. The module includes at least one optical functional element producing loss over the bandwidth and at least one rare-earth doped fiber segment. The modu... | 08/16/2011 |
| 7969648 | Gain and signal level adjustments of cascaded optical amplifiers An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplif... | 06/28/2011 |
| 7940452 | Method for acquiring spectrum shape of a gain flattening filter in an optical amplifier A method for acquiring spectrum shape of a gain flattening filter of a doped optical fiber amplifier comprises the steps of: measuring spectrum shapes at two gain point (H, L) of the doped optical fiber with invariable fiber length respectively; and acquiring variou... | 05/10/2011 |
| 7911684 | Variable gain erbium doped fiber amplifier Systems, methods, and apparatuses are provided for variable gain optical fiber amplifiers. In one implementation, a variable gain optical amplifier is provided. The amplifier includes a first erbium doped fiber configured to receive an input optical signal, a second... | 03/22/2011 |
| 7880960 | Optical amplifier and abnormality detection method for the same An optical amplifier includes a first optical amplification unit that amplifies input light, a variable optical attenuation unit that attenuates an output of the first optical amplification unit, a second optical amplification unit that amplifies an output of the va... | 02/01/2011 |
| 7733562 | Optical equalization of multi-level symbol constellations A method of optically equalizing a multi-level (amplitude or phase) optical signal through the effect of an optical equalizer wherein the optical equalizer (OEQ) is placed at either a transmission end or a receiver end of the optical communications link and a tap de... | 06/08/2010 |
| 7715093 | 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... | 05/11/2010 |
| 7609437 | Optical amplifier apparatus An optical amplifier apparatus capable of dealing with different wavelength bands and capable of outputting an amplified light with reduced noise for any one of the wavelength bands. In a case of amplifying a light of C-band, terminals (51,52) of an optical s... | 10/27/2009 |
| 7602545 | Gain-flattening apparatus and methods and optical amplifiers employing same Gain-flattening components for compensation of at least a portion of the spectral gain profile of an optical amplifier comprises an optical substrate having at least a first gain-flattening filter disposed on a first surface of the optical substrate and a second gai... | 10/13/2009 |
| 7589888 | Optical amplifier having a constant gain profile An optical amplifier includes a rare-earth doped optical fiber or rare-earth doped optical waveguide serving as an amplification medium where rare-earth ions have been doped in its core and/or clad, an excitation mechanism for exciting the amplification medium, and ... | 09/15/2009 |
| 7586673 | Optical gain waveguide and method of controlling the same The present invention relates to an optical gain waveguide having excellent gain flatness in C-band, and excellent tolerance against variations of a pumping light wavelength as well, and a method of controlling the same. The optical gain waveguide includes an optica... | 09/08/2009 |
| 7522334 | Optical communication systems including optical amplifiers and amplification methods with flat noise figure profile Optical systems of the present invention include first and second optical amplifiers that are operated individually to provide gain profiles that do not conform with a desired composite, or overall or total, gain profile, e.g., substantially flat, but to produce a d... | 04/21/2009 |
| 7443576 | Compensation for spectral power tilt from scattering A method and apparatus for adjusting the tilt of an inline amplifier. A controller reads the power of an amplifier twice. Then, if there is a change in power, a difference is calculated by subtracting the first power from the second power. A tilt correction is calcu... | 10/28/2008 |
| 7440163 | Compact passive module for erbium and other fiber amplifiers Techniques for designing optical devices with passive components for erbium and other doped fiber amplifiers are disclosed. In one aspect, all passive components needed to construct optical amplifiers of both single and multiple-stage forward or backward pumps are i... | 10/21/2008 |
| 7440168 | Managing gain tilt in an optically amplified transmission system An optical transmission system may include a combination of higher gain repeaters and lower gain repeaters, arranged to manage gain tilt. The higher gain repeaters and lower gain repeaters may be arranged to allow net gain to vary (e.g., above and below zero) within... | 10/21/2008 |
| 7423804 | Spectrally resolved fast monitor A method and apparatus for monitoring spectral tilt uses an arrayed waveguide grating (AWG) to separate a multiplexed optical signal having a plurality of wavelength channels into a plurality of sub-bands, where each sub-band spans a different wavelength range and i... | 09/09/2008 |
| 7418428 | System and method for controlling delivering of a commodity A system and method manage delivery of energy from a distribution network to one or more sites. Each site has at least one device couple to the distribution network. The at least one device controllably consumes energy. The system includes a node and a control syste... | 08/26/2008 |
| 7411727 | Method and an optical amplifier assembly for adjusting Raman gain A method of adjusting Raman gain in an optical amplifier assembly (1a). The method comprises inputting a plurality (N) of optical signals (OS) on different wavelength channels to a backward-pumped Raman active medium (4a) pumped by means ... | 08/12/2008 |
| 7394994 | Optical receiver circuit An optical receiver circuit comprising an optical converter circuit (38), comprising a photodiode and converting optical power into electrical power, a sensor circuit for deriving a control voltage VCONTR as a characteristic value of the electrical power outp... | 07/01/2008 |
| 7385754 | Efficient wavelength referencing in a combined optical amplifier-optical channel monitor apparatus Efficient wavelength calibration in a WDM optical amplifier that includes an optical channel monitor (OCM) is obtained by introducing a notch into the amplified spontaneous emission (ASE) noise spectrum of the amplifier outside a WDM transmission band, and having th... | 06/10/2008 |
| 7382525 | Optical amplification unit with span loss tilt compensation, fiber optical transmission system comprising the same, and corresponding methods An optical amplification unit comprises at least one optical amplifier for amplifying an optical signal and a filter preceding or following the optical amplifier. The optical amplifier comprises a first measuring device for measuring a property of an input signal of... | 06/03/2008 |
| 7375876 | Optical transmitting apparatus having variable optical transmitting unit including plurality of paths An optical transmitting apparatus includes a variable optical attenuating unit for attenuating signal light variably, an optical amplifying unit for amplifying the signal light, and a looped optical circuit for returning the signal light from the optical amplifying ... | 05/20/2008 |
| 7369300 | Optical amplifier pre-emphasis and equalization method and optical communications system incorporating same The present invention provides an optical amplifier pre-emphasis and equalization method that alleviates the optical amplifier gain ripple penalty experienced in conventional optical communications systems. This method includes storing measured communications channe... | 05/06/2008 |
| 7369777 | Method and apparatus for automatically adjusting the optical power directed to a dispersion compensating element A dispersion compensator is provided that includes an input port 102 for receiving a WDM optical signal and a dispersion compensating element 110 coupled to the input port for substantially compensating the WDM optical signal for dispersion that has ac... | 05/06/2008 |
| 7366326 | Real-time implementation of field programmable gate arrays (FPGA) design in hyperspectral imaging A Field Programmable Gate Arrays (FPGA) design uses a Coordinate Rotation DIgital Computer (CORDIC) algorithm that can convert a Givens rotation of a vector to a set of shift-add operations. The CORDIC algorithm can be easily implemented in hardware architecture, th... | 04/29/2008 |
| 7365903 | Apparatus and method for all-optical control of gain and gain flattening on an optical amplifier Provided is an apparatus and method for all-optically controlling both a gain and a gain flattening. The apparatus includes: a first amplifier automatically controlling a gain of the apparatus through a feedback loop while amplifying a received optical signal; a fix... | 04/29/2008 |
| 7362925 | Control method and control apparatus of optical device The present invention aims at providing a control method and a control apparatus for controlling the operation setting of an optical device with high accuracy, so as to reliably obtain characteristics according to a desired relationship to be set corresponding to a ... | 04/22/2008 |
| 7362497 | Optical fibre This invention relates to optical fibres, fibre lasers, fibre laser arrays and sensor systems comprising fibre laser arrays. Conventional fibre laser sensor arrangements comprise a plurality of fibre lasers arranged in series along a length of optical fibre. A pump ... | 04/22/2008 |
| 7359638 | Optical source generator for wavelength division multiplexing optical communication systems An optical source generator for wavelength-division-multiplexing optical communication systems includes a wavelength-division multiplexer/demultiplexer, optical amplifiers, and wavelength-dependent reflectors such as optical fiber-Bragg gratings or wavelength-indepe... | 04/15/2008 |
| 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 |
| 7355786 | Raman amplifying device and raman amplifying system A Raman amplifying device includes a plurality of Raman amplifiers having a gain wavelength characteristic with a gain peak at which an amplification gain becomes the largest, including a first Raman amplifier having a gain wavelength characteristic with a plurality... | 04/08/2008 |
| 7352226 | Versatile attenuator A versatile attenuator. The versatile attenuator includes a first mechanism for receiving an input signal. A second mechanism measures the input signal and provides a signal-level indication in response thereto. A third mechanism selectively attenuates the input sig... | 04/01/2008 |
| 7342714 | Multi-band hybrid SOA-raman amplifier for CWDM A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multi... | 03/11/2008 |
| 7342712 | Filters, including optical filters, having equal group delay ripple and minimized phase non-linearity within their pass bands The present invention provides an optical telecommunications network that includes at least one of a filter having equal group delay ripple and minimized phase non-linearity which is formed by the process including limiting at least one of the group delay ripple and... | 03/11/2008 |
| 7340165 | Optical amplifying device An optical amplifying device disposed on a transmission path of a WDM signal includes an optical amplifier amplifying the WDM signal, a detecting unit detecting a change in a transmission wavelength count contained in the WDM signal and/or a change in light receivin... | 03/04/2008 |
| 7336414 | Optical modulating device An optical modulation apparatus is provided which implements a stable amplifying function by reducing the effect of reflected light rays form end faces of a bidirectional optical amplifier by imposing a numerical limitation on the relationship between the gain of th... | 02/26/2008 |
| 7336415 | Optical amplification module, optical amplification apparatus, and optical communications system The present invention relates to a practical optical amplification module and the like realizing a wide-band gain spectrum with a small relative gain non-uniformity in L band. Pumping light from a pumping light source is supplied to a Bi type EDF by way of an optica... | 02/26/2008 |
