| Patent Number |
Title Of Patent |
Date Issued |
| 6519374 |
Predistortion arrangement using mixers in nonlinear electro-optical applications |
February 11, 2003 |
| A predistortion arrangement is described for using an input signal to drive a nonlinear device having a drive input. Initially, first means sample a portion of the input signal. The sampled portion of the input signal is introduced to at least one predistortion path including a mixer res |
| 6370290 |
Integrated wavelength-select transmitter |
April 9, 2002 |
| An integrated optical transmitter for use in an optical system has an optical head assembly with an optical beam generator for providing an optical beam and a lens assembly collecting the optical beam and generating therefrom a formed optical beam. Interface optics receives the forme |
| 6324202 |
Power efficient gas ion laser system, associated laser tube, and method |
November 27, 2001 |
| A power efficient continuous wave gas ion laser system, associated laser tube and method are described. The system uses a fixed electrical input power and a power factor corrected power supply producing an output voltage and an output current from the fixed input electrical power. A gas |
| 6282003 |
Method and apparatus for optimizing SBS performance in an optical communication system using at |
August 28, 2001 |
| A method of optimizing SBS suppression is disclosed for use in an optical communication system including a light guide for transmitting light and means for producing phase modulation of the light using at least first and second tones. In the method, an operational region of SBS suppressi |
| 6104737 |
Universal laser power controller in a gas ion laser system |
August 15, 2000 |
| A multi-mode/universal laser power controller is disclosed for use in an overall laser system. An associated method is also disclosed. The controller may drive one of at least two different laser tubes which require different particular sets of drive voltages. The power controller in |
| 6069690 |
Integrated laser imaging and spectral analysis system |
May 30, 2000 |
| A system for analyzing an object has two operating modes such as scanned imaging mode and stop scan spectral analysis mode. A beam scanner is optically connected to a laser to receive laser beams from the laser. Beam scanner also scans the beams if the system is in the scanned imaging mo |
| 5982964 |
Process for fabrication and independent tuning of multiple integrated optical directional couple |
November 9, 1999 |
| A method of fabricating an optical device incorporates two different techniques for formation of different structures of the device on the same substrate. Individual processes such as Titanium indiffusion and annealed proton exchange in LiNbO.sub.3 require significantly different tempera |
| 5973832 |
High performance optical circulators |
October 26, 1999 |
| As will be described in more detail hereinafter, there are disclosed herein high performance optical circulators and an associated method. The improvement in these circulators comprises an arrangement along the length of the main body for performing a predetermined sequence of optical |
| 5960015 |
Two mode amplitude-stable intracavity-doubled laser and method |
September 28, 1999 |
| A two-mode, amplitude-stable laser is disclosed which provides two-mode operation (i.e., two fundamental lasing modes of similar, but distinct frequencies), resulting in low noise output at harmonic frequencies of the fundamental mode frequencies. An associated method is also disclosed. |
| 5949802 |
High efficiency intracavity doubled laser and method |
September 7, 1999 |
| An intracavity doubled single longitudinal mode laser is disclosed which provides stable (i.e., low amplitude variation in its output beam intensity), efficient operation. An associated method is also disclosed. The laser includes an input mirror and an output mirror defining a reson |
| 5946338 |
Decoupled intracavity laser alignment |
August 31, 1999 |
| There is disclosed a method of performing alignment adjustments for bringing a laser into a desired alignment which, in turn, affects light output intensity of the laser. The laser defines an alignable light path within a resonant cavity and includes a birefringent nonlinear material |
| 5905748 |
Single mode laser and method suitable for use in frequency multiplied |
May 18, 1999 |
| A single mode laser implementation and associated method are disclosed. The laser may accommodate a frequency multiplying material to provide an intracavity doubled single frequency laser. The laser implementation includes an input mirror and an output mirror defining a resonant cavity |
| 5544271 |
Nonlinear optical generator with index of refraction perturbed reflector arrangement |
August 6, 1996 |
| A nonlinear optical generator which includes an optical fiber is described. The optical fiber has perturbations in the effective index of a mode guided by the same. These perturbations are simply provided as a multitude of transitions between the indices of refraction of the fiber, space |
| 5386434 |
Internal mirror shield, and method for protecting the mirrors of an internal gas laser |
January 31, 1995 |
| An internal mirror argon ion gas tube is described having protective sleeve barriers at opposite ends to prevent any particulate matter which might emanate from a weakened section of the mirror holder at the corresponding end from reaching the interior face of the mirror. |
| 5351330 |
Laser diode-lens alignment |
September 27, 1994 |
| An optical alignment structure is described for coupling the output of a laser diode to an optical fiber. The structure includes a rigid outer block which holds the laser diode in tight thermal contact, The block defines a cavity within which there is an optic axis along which the ou |
| 5278515 |
High bandwidth information channel with optocoupling isolation |
January 11, 1994 |
| An accurate direct current to 1 MHz (or more) analog information channel with 7.5 kV input to output isolation is provided using a commercially available opto-electronic isolator. The relatively slow response, (limited bandwidth) of the LED portion of the opto-electronic isolator is over |
| 5097229 |
Modulator - demodulator transformer coupled D.C. to one Mhz information channel |
March 17, 1992 |
| An analog direct current to one MHz information channel is provided, with high acccuracy and 10K volt input-output isolation. The information channel has a voltage to current converter which receives the analog input signal, and whose output is modulated by a square wave generator and |
| 5003456 |
Circuit for providing fast output current control in a current mode switching power supply |
March 26, 1991 |
| A circuit for providing current to a laser tube permits high current, high output voltage, and high frequency modulation response (e.g., up to about 1 MHz, in one embodiment) with low power dissipation. This is accomplished by combining the output current from two current sources, one of |
| 4959606 |
Current mode switching regulator with programmed offtime |
September 25, 1990 |
| A current mode switching regulator power supply with an improved regulator system achieves a constant operating period by predetermining the off time of the switching transistor. The off time is programmed by the input and output voltages acting on a resistor-capacitor timing circuit ena |
| 4910654 |
Current limiting scheme for the AC input circuit to a switch mode power supply |
March 20, 1990 |
| A DC switch mode power supply operating from an AC input power source typically has an input stage which includes a rectifier for rectifying the AC input power waveform to provide a DC voltage to the switch mode power supply. This rectifier includes a capacitive storage circuit for stori |
| 4864583 |
Gas lasers with reduced turn-on delay |
September 5, 1989 |
| The turn-on delay of a gas laser is significantly reduced by creating a region of higher electric field intensity between the plasma discharge-confining region of the laser and the laser anode. This is accomplished by creating one or more regions of higher conductivity along the surf |
| 4750182 |
Gas lasers |
June 7, 1988 |
| The turn-on delay of a gas laser is significantly reduced by inducing a transient electric field of sufficient intensity to induce ionization in a localized region of the laser adjacent to the anode. This is accomplished by means of a coupler which couples the voltage applied to the cath |
| 4631727 |
Cold cathode gas tubes |
December 23, 1986 |
| The turn-on delay of a cold cathode gas tube, such as a gas laser, is significantly reduced by the inclusion of an electric field concentrator in a region of the tube between the tube anode and cathode. The concentrator can take the form of a projecting conductive member having a sha |
| 4352185 |
Gas laser having improved stability against environmental conditions |
September 28, 1982 |
| The laser is an internal mirror hermetically sealed design, utilizing an envelope made principally of glass. The effects of thermally produced distortion on mirror alignment are minimized by providing a thermally and electrically conductive liner in close contact with the envelope wall. |
