Bizarre Patents
User-operated amusement apparatus for kicking the user's buttocks
An apparatus including a user-operated and controlled apparatus for self-infliction of repetitive blows to the user's buttocks by a plurality of elongated arms bearing flexible extensions that rotate under the user's control.
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| Number | Title | Issue Date |
| 6055251 | Method and apparatus for frequency modulating a semiconductor laser, and an optical communication system using the same A driving method of the present invention drives a semiconductor laser which is provided with at least first and second electrodes through each of which current is injected into the semiconductor laser. Varying current is injected through the first electr... | 04/25/2000 |
| 6055252 | Fiberoptic transmitter using thermistor to maintain stable operating conditions over a range of temperature Techniques for controlling the operation of a laser diode to maintain optimum operating characteristics (i.e., fairly constant output power and extinction ratio) despite the fact that the threshold current and slope efficiency vary greatly over a the desi... | 04/25/2000 |
| 6049558 | Optical elements for guiding laser light and laser systems comprising same Laser systems, and optical elements for laser systems, are disclosed for providing a pumped laser light with improved output efficiency while having simple construction and simple alignment adjustment. A pump light flux from a diode pumping laser irradiat... | 04/11/2000 |
| 6046838 | Automatic bias control for electro-optic modulators The bias point of an electro-optic modulator, such as an Mach-Zender modulator, is automatically controlled. A pilot signal, preferably two pilot tones at different frequencies, is applied to the modulator. The output of the modulator then contains variou... | 04/04/2000 |
| 6031859 | Mode-locked semiconductor laser A mode-locked semiconductor laser includes a gain region formed from a semiconductor gain material of two or three dimensional carrier confinement structure having a size on the order of a thermal de-Broglie wavelength, the size of the semiconductor of th... | 02/29/2000 |
| 6031858 | Semiconductor laser and method of fabricating same A semiconductor laser is disclosed, which realizes a continuous oscillation in a fundamental transverse mode at a low operating voltage by a transverse mode control. This semiconductor laser is fabricated by forming successively the following layers on a ... | 02/29/2000 |
| 6028687 | Arrangement for recovering a clock from a modulated optical input signal A laser arrangement for recovering a clock from a modulated optical input signal (So) has, between a resonator mirror (21) for launching the input signal and a resonator mirror (42) for coupling out the recovered clock (T), a bidirectional opti... | 02/22/2000 |
| 6026105 | Technique for measuring semiconductor laser chirp A technique for characterizing laser chirp utilizes an optical fiber and its inherent interferometric properties. An RF modulating signal is applied to the laser, where the modulated output signal thereafter propagates through a conventional optical fiber... | 02/15/2000 |
| 6023362 | Optical transmitter having pre-modulation amplification In one embodiment, an optical transmitter, which has a modulator disposed between an pair of optical amplifiers, exhibits reduced carrier-to-noise ratio and relatively high powers. In another embodiment, an optical amplifier is disposed between the laser ... | 02/08/2000 |
| 6021141 | Tunable blue laser diode A harmonic generator laser system which features a distributed Bragg reflector (DBR) or distributed feedback (DFB) tunable diode laser coupled to a quasi-phase matched (QPM) waveguide of optically nonlinear material. Tuning of the DBR laser may be achieve... | 02/01/2000 |
| 6021148 | Semiconductor laser device A semiconductor laser device in which a semiconductor laser emitting laser light and a light modulator modulating the laser light are integrated on a compound semiconductor substrate, includes a hole trapping layer for suppressing a reactive current that ... | 02/01/2000 |
| 6016326 | Method for biasing semiconductor lasers A method for biasing a semiconductor laser (12) at the threshold level of the semiconductor laser (12). The method includes applying pilot tone signals having the same frequency to a bias current and a drive current of the semiconductor laser (12). A late... | 01/18/2000 |
| 6014392 | Drive circuit for electro-absorption modulator and optical transmitter employing the same The present invention relates to A drive circuit can stabilize a bias voltage of an optical modulator to realize long distance transmission by preventing degradation of waveform, even if there is a dispersion on a characteristic of an electro-absorption m... | 01/11/2000 |
| 6014390 | Tunable transmitter with Mach-Zehnder modulator An improved wavelength tunable transmitter comprises a waveguide grating router coupled to a truncated Mach-Zehnder interferometric modulator. Light from the second order Brillouin zones of a waveguide grating router having substantially the same phase ar... | 01/11/2000 |
| 6011810 | Doping of germanium and silicon crystals with non-hydrogenic acceptors for far infrared lasers A method for doping semiconductors used for far infrared lasers with non-hydrogenic acceptors having binding energies larger than the energy of the laser photons. Doping of germanium or silicon crystals with beryllium, zinc or copper. A far infrared laser... | 01/04/2000 |
| 6002702 | Radiation source for laser spectroscopy A laser array for determining the concentrations of gases. A simply acting device and a corresponding process are provided, which make possible a high signal resolution by reducing the interferences without prolonging the measurement time. The interferenc... | 12/14/1999 |
| 5999548 | White optical pulse source and applications The present invention relates to a white pulse source that produces spectrally shaped white pulses of a constant optical output power over a wide wavelength range. The white pulse source includes a pump pulse source for generating pump pulses with a cente... | 12/07/1999 |
| 5991323 | Laser transmitter for reduced signal distortion A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB... | 11/23/1999 |
| 5991316 | Laser light emitting device, laser beacon device and laser imager display device A laser beam generating device which, by addition of a simplified structure, can enlarge the spectral width of the laser light and lower the coherence to a moderate value. The laser light generating device includes a first laser light source 31, a second ... | 11/23/1999 |
| 5987041 | Laser apparatus and method for emission of laser beam using same A laser apparatus capable of emitting a laser beam upon wavelength conversion and intensity modulation, which comprises a fundamental wave resonance means comprising a light emitting part, an optical resonator comprising mirrors sandwiching the light emit... | 11/16/1999 |
| 5987050 | Laser transmitter based on a coupler and having a controlled output port A laser transmitter based on a star coupler includes a separate controlled output port. An interferometric modulator is incorporated inside a laser cavity by means of a star coupler and enables modulation of the laser signal, independent of the means of w... | 11/16/1999 |
| 5982798 | Semiconductor laser and process for production thereof In a semiconductor laser for analog modulation, intermodulation distortion at high temperatures and/or at high outputs is reduced. In a DC-PBH semiconductor laser, the width (Wm) of the electrode mesa 11 is set at 10 μm or less, and the width of each rec... | 11/09/1999 |
| 5963569 | Multiple channel acousto-optic modulators A multichannel acousto-optic modulator (MCAOM) is described which uses a crystal with a plurality of mounting faces for acoustic transducers. The mounting faces are oriented so that the acoustic transducers mounted thereon generate acoustic fields which i... | 10/05/1999 |
| 5963567 | Multi-wavelength laser source A light source for generating many precisely spaced wavelength channels, based on the periodic modulation of light. CW light is periodically amplitude modulated and then coupled to a non-linear fiber where it undergoes additional modulation by the process... | 10/05/1999 |
| 5949941 | Cladding-pumped fiber structures A cladding-pumped fiber structure is disclosed in which mode mixing of pump light injected into the fiber is induced by index modulation. In one embodiment, the index modulation is created by a stress-inducing region disposed in the cladding which simulta... | 09/07/1999 |
| 5946334 | Semiconductor laser control system A pulse width modulation and intensity modulation signal generating unit, based on input data, performs pulse width modulation and intensity modulation and generates a light emission instruction signal. An error amplifier forms a negative feedback loop to... | 08/31/1999 |
| 5936992 | Method for selecting a semiconductor integrated optical modulator/laser light source device The present invention provides a method for selecting a semiconductor integrated optical modulator/laser light source device comprising a modulator section and a laser section. The method comprises the following steps. The laser section is supplied with a... | 08/10/1999 |
| 5926308 | High-speed optical modulator module A high-speed optical modulator module which includes: a lead frame having an outer lead frame and an inner lead frame, the outer lead frame for receiving a high-speed signal; a substrate, in which a metal base having a matching impedance device, and a sub... | 07/20/1999 |
| 5926492 | Laser pulse oscillator A harmonically and regeneratively mode-locked laser pulse oscillator having a clock extraction circuit for picking up from a fragment of a laser output a clock signal corresponding to a high-order integer multiple of the fundamental frequency determined b... | 07/20/1999 |
| 5923687 | Bandwidth enhancement and broadband noise reduction in injection-locked semiconductor lasers An injection-locked semiconductor laser process that improves the modulation bandwidth and reduces the broadband noise of an injection-locked semiconductor laser. Injection locking of a semiconductor laser can significantly improve its broadband modulatio... | 07/13/1999 |
| 5917637 | Method of and device for driving optical modulator, and optical communications system A device and a method for driving an electro-absorption optical modulator for receiving carrier light emitted from a light source and outputting signal light subjected to intensity modulation according to the absorption of the carrier light. A bias circui... | 06/29/1999 |
| 5901164 | Direct amplitude modulation of lasers A DFB laser is provided with a top electrode divided symmetrically into two or three in-line separate elements through which a bias current is applied with a symmetrical distribution and through which a modulation current is applied in push-pull with a te... | 05/04/1999 |
| 5889801 | Driving method for tunable semiconductor laser diode, tunable light source device and driving method for the same A driving method for a tunable semiconductor laser which is remarkably effective for realizing high speed and stable wavelength switching is presented. Generally, when a single longitudinal mode laser oscillation wavelength of a tunable semiconductor lase... | 03/30/1999 |
| 5883914 | Integrated device with monolithically formed light emitting element and external modulator and integrated device with monolithically formed light emitting element and light receiving element A GCL is formed on a first major surface of a semi-insulating InP substrate. Specifically, an InGaAsP active layer, an InGaAsP waveguide path and a striped grating having two phase shift portions are formed on the first major surface of the InP substrate.... | 03/16/1999 |
| 5862165 | Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method A variable wavelength light source is provided with a laser of which the oscillating state can be changed over between two oscillating states accompanied by a change of an oscillation wavelength, and an optical selection element for selecting an output li... | 01/19/1999 |
| 5852304 | Optical communication system A semiconductor photonic integrated circuit and a manufacturing method thereof involving a selective-area growth technique using a set of insulating film patterning masks formed on a semiconductor substrate. The mask width and the mask-to-mask open space ... | 12/22/1998 |
| 5850409 | Laser modulation control method and apparatus Laser modulation control apparatus and methods which provide direct control of the transmitted optical extinction ratio of a semiconductor laser. A relatively low frequency and low amplitude pilot tone is superimposed on the signal used to drive the laser... | 12/15/1998 |
| 5848084 | Semiconductor light source for an optical transmitter and an optical transmission module using the semiconductor light source A semiconductor light source for an optical transmitter which includes at least one DC supply unit and at least one AC supply unit, comprises a DC signal source connected to the DC supply unit in order to supply a drive signal thereto; and an AC signal so... | 12/08/1998 |
| 5841799 | Semiconductor laser, modulation method therefor and optical communication system using the same A semiconductor laser of the present invention includes a semiconductor laser structure having a waveguide extending along a resonance direction, an active layer provided at least partly in the waveguide, and a control unit for controlling the excited sta... | 11/24/1998 |
| 5838709 | Ultraviolet laser source An ultraviolet laser source which can stably emits ultraviolet light having a sufficient output and low coherence, as a light source for an exposure unit, for a long period of time, is compact, and allows easy maintenance. The laser source is constituted ... | 11/17/1998 |
