U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5500234

Crispy Chip Sandwich and Process of Producing a Sandwich Product

A food product comprising a multilayer cookie or snack having outer layers formed from a crispy type edible food product such as a potato chip or corn chip, etc. with an intermediate marshmallow layer being in contact with the inner surface of each crispy chip and one or more filler substances.

Newsletter  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.

 

Class 359/341.42 - Automatic Level Control (ALC)


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein the feedback provides an adjustment
No. of patents: 145
Last issue date: 12/13/2011


1        
NumberTitleIssue Date
8077384Optical amplifier, and optical transmission system including the optical amplifier
An optical amplifier provided in a repeater station of an optical transmission system is proposed. The optical amplifier amplifies an signal light and performs ALC of output power by means of a variable optical attenuator (VOA). The optical amplifier receives a diff...
12/13/2011
7961380Fast power transient supression in constant power-mode controlled optical amplifiers
The specification describes an improved approach to suppressing fast transients in optical amplifier systems. The approach relies on operating the amplifier in an automatic power-mode control with an extra loss component. It is applicable to optical amplifiers based...
06/14/2011
7619813Wavelength division multiplexing device, an optical leakage prevention method, and a wavelength division multiplexing communication system
A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received...
11/17/2009
7453628Optical amplifier having wide dynamic range
In an optical amplifier of the invention, a first variable optical attenuator is provided between a fore-stage optical amplification unit and a post-stage optical amplification unit, and a second variable optical attenuator is also provided on the output side of the...
11/18/2008
7408702Bidirectional optical amplifier
A bidirectional amplification system and method are disclosed. A single optical line amplifier and isolation loss filters are used to amplify signals in both the east and west directions with sufficient gain along a fiber. ...
08/05/2008
7400443Method and apparatus for optical amplifying device gain control with gain threshold
Optical amplifying method and apparatus are proposed. Constant gain amplifiers operate such that the output power of the amplifier generally tracks the input power. However, optical systems are not perfect and the input to the optical amplifier stage includes not on...
07/15/2008
7394590Control device and control method of optical amplifier
There are provided an ASE correction unit which corrects control errors regarding either or both of the gain and the output level of the optical amplifier, which control errors are generated due to the ASE, and an ASE correction controller which controls the correct...
07/01/2008
7362499Optical 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
7362498Method and apparatus for controlling a semiconductor optical amplifier for use in a passive optical network
An optical amplifier including: an amplifier having an input port and an output port, which is disposed along a main signal line of the optical amplifier; a dummy laser generation circuit having an output coupled to the main signal line and operative for inputting a...
04/22/2008
7345811Multimode 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...
03/18/2008
7343102Optical transmission system with automatic signal level adjustment and startup functions
An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream an...
03/11/2008
7330304Method and apparatus for PPM demodulation using a semiconductor optical amplifier
An optical pulse position modulation receiver relying on the gain dynamics in a semiconductor optical amplifier (SOA). Optical PPM signal pulses and periodic optical clock pulses at a different frequency and/or polarization than the signal pulses are coupled into an...
02/12/2008
7324268Optical signal amplifier and method
An optical amplification apparatus is provided comprising a plurality of fiber amplification media segments which are concatenated in series wherein subsequent to each fiber amplification media segment one or more wavelengths is dropped so as to exploit a gain versu...
01/29/2008
7302178System 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...
11/27/2007
7280762Optical communication system having dynamic gain equalization
An optical communication device, and related method, are provided for providing a tailored, spectrally non-uniform gain over a broad spectrum. In particular, the optical communication device includes an optical amplifier having a dynamic gain equalization (DGE) circ...
10/09/2007
7256931Optical amplifying device
In an optical amplifying device, an optical beam passes multiple times through a grazing-incidence bounce amplifier, accessing different parts (G1,G2) of the gain region on each transit. This provides improved characteristics in beam quality, with high...
08/14/2007
7242865Optical communication system
An optical transmission equipment in an optical communication system interconnecting two optical transmission equipment sets by a main transmission line and a backup transmission line. An optical amplifier amplifies and outputs optical signals from one transmission ...
07/10/2007
7236700Scalable 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
7227681Controller 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
7224517Multi-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...
05/29/2007
7224516Multimode 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
7212335Apparatus and method for amplification medium performance simulation, and optical amplifier
An amplification medium simulation apparatus comprises a basic data retaining unit 21, an input signal beam information retaining unit 22, and a simulation executing unit 31 approximating and calculating an output signal beam power at each signa...
05/01/2007
7206512Method 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
7202997Optical amplifier and optical amplifier control method
An optical amplifier includes first and second optical amplifier units, a variable optical attenuator optically coupled between the first and second optical amplifier units, a first control unit to control gains of the first and second optical amplifier units based ...
04/10/2007
7200333Optical communication apparatus, system, and method that properly compensate for chromatic dispersion
An optical communication apparatus performs wavelength division multiplexing with respect to signals of a plurality of signal transmission bands. The apparatus includes a first optical unit which effects distributed Raman amplification and has a characteristic that ...
04/03/2007
7197246Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer
The first present invention provides an optical switch including the following elements. At least a plurality of optical transmission lines are provided for transmissions of optical signals. Each of the at least plurality of optical transmission lines have at least ...
03/27/2007
7180655Broad-band light source
A broad-band light source has a reduced tendency to oscillate and has high efficiency. The broad-band light source comprises (a) an optical waveguide that comprises a optical active element to generate an ASE lightwave when a pumping lightwave is supplied, that outp...
02/20/2007
7173756Optical amplification system for variable span length WDM optical communication systems
An optical communications system includes a plurality of optical fiber spans. An optical loss of one of the plurality of optical fiber spans is different from an optical loss of another one of the plurality of optical fiber spans. At least one of the plurality of op...
02/06/2007
7170673Optical 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
7161734Method and apparatus for controlling power transients in an optical communication system
A method and apparatus for controlling transients in an optical signal propagating along an optical fiber path interconnecting a plurality of network elements employs a power threshold to determine an appropriate response given a change in optical signal power. ...
01/09/2007
7158290Controlling apparatus for optical amplifier and controlling method thereof
An optical amplifier is provided with a controlling unit for controlling a gain of the optical amplifier based on input light power and output light power of the optical amplifier, as well as a gain control amount variable unit for changing the gain control amount o...
01/02/2007
7154664Apparatus and method for amplification medium performance simulation, and optical amplifier
An amplification medium simulation apparatus comprises a basic data retaining unit 21, an input signal beam information retaining unit 22, and a simulation executing unit 31 approximating and calculating an output signal beam power at each signa...
12/26/2006
7151895Method 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
7151630Raman amplification repeater
A repeater according to the present invention includes a plurality of excitation light sources with varying center wavelengths for use as an excitation light source to achieve Raman amplification; and comprises a flatness monitoring circuit which monitors the flatne...
12/19/2006
7145717Optical amplifier
An optical amplifier that improves transmission quality by driving an excitation light source according to a change in the level of an input optical signal and by compensating for a change in the characteristics of the excitation light source. An optical amplificati...
12/05/2006
7139120Optical amplifier with variable gain equalization
An optical amplifier, provided in a WDM transmission system, contains an amplification medium for amplifying WDM light, a measurement part for measuring at least one input optical power of the WDM light on both input and output sides of the amplification medium, a v...
11/21/2006
7116908Optical 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
7106499Raman amplification control method, optical communication system, optical amplifier and program
Power of signal light injected to a Raman amplification medium is measured or estimated by calculation and ratio of the gain between forward pump light and backward pump light is controlled according to the result of the measurement or calculation. Wavelengths used ...
09/12/2006
7103275Optical transmission system
An optical transmission system capable of monitoring the operating status of Raman-amplifier repeaters even when an optical transmission line is partly disrupted by a fiber failure. An end station sends a monitoring command signal to request a particular repeater to...
09/05/2006
7092148Optical 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...
08/15/2006
1        
 
Sign InRegister
Username  
Password   
forgot password?