Eitan Ge Gertel

6370290, Apr 9, 2002

Sep 19, 1997

08/934189

Gary A. Ball - Simsbury CT
Robert W. Ade - Bolton CT
Karl Kissa - Avon CT
Paul Dunn - Westfield MA
Timothy C. Munks - Crystal Lake IL
Eitan Gertel - North Wales PA

Uniphase Corporation - San Jose CA

G02B 612

385 14

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 formed optical beam and provides optical coupling so as to minimize insertion loss to the optical beam. Also included is an optical modulator for receiving the optical beam from the interface optics and for providing a modulated optical beam in response to received modulation signals. The optical modulator is coupled to the interface optics to be in a fixed relationship therewith.

6634811, Oct 21, 2003

Nov 30, 1999

09/451417

Eitan Gertel - North Wales PA
Mark Colyer - Fountainville PA

JDS Corporation - San Jose CA

H04B 1000

398159, 398187, 398141

An optical link is described for transmission of an RF signal using an optical fiber having opposing ends and configured such that unwanted distortion signals are produced when optical signals pass through the optical fiber. At least first and second optical signals are transmitted through the optical fiber, where the optical signals have been modulated with an RF signal in such a way that a predetermined relationship is produced between the RF signals modulated on the first and second optical signals. At the opposing end of the optical fiber, a receiving arrangement receives the modulated first and second optical signals including the unwanted distortion signals produced during the transmission through the optical fiber. The receiving arrangement then regenerates the RF signal from the modulated first and second optical signals while causing the unwanted distortion signals to be canceled based on the predetermined relationship between the RF signals modulated on the first and second optical signals.

20050025416, Feb 3, 2005

Oct 2, 2003

10/605490

Peter Hallemeier - North Haven CT, US
Mark Coylar - Fountainville PA, US
Eitan Gertel - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

OPTIUM CORPORATION - Chalfont PA

G02B006/26
G02B006/293

385028000, 385024000

A multi-mode optical fiber link is described. The multi-mode optical fiber link includes a first spatial mode converter that is coupled to a first single mode optical fiber. The first spatial mode converter conditions a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter. A multi-mode optical fiber is coupled to the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber and to a second single mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal.

20050025417, Feb 3, 2005

Jan 7, 2004

10/707729

Peter Hallemeier - North Haven CT, US
Mark Colyar - Fountainville PA, US
Eitan Gertel - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

OPTIUM CORPORATION - Chalfont PA

G02B006/26

385028000

A multi-mode optical fiber link is described that includes a single-mode optical fiber having an input that receives an optical signal for transmission through the multi-mode optical fiber link. A first spatial mode converter is coupled to the single-mode optical fiber. The first spatial mode converter conditions a modal profile of the optical signal for propagation through a multi-mode optical fiber. A multi-mode optical fiber is coupled to an output of the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal propagating through an output of the second spatial mode converter.

20050025500, Feb 3, 2005

Sep 9, 2003

10/605107

Peter Hallemeier - North Haven CT, US
Mark Colyar - Fountainville PA, US
Eitan Gertel - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

OPTIUM CORPORATION - Chalfont PA

G02F001/00

398186000

An optical transmitter for an optical fiber transmission system is described. The optical transmitter includes an optical source that generates an optical signal having a wavelength at an output. An optical intensity modulator modulates the optical signal with an electrical modulation signal to generate a modulated optical signal at an output. At least one parameter of the optical intensity modulator is chosen to suppress at least one of phase and sideband information in the modulated optical signal. An optical fiber is coupled to the output of the optical intensity modulator. The suppression of the at least one of the phase and the sideband information in the modulated optical signal increases an effective modal bandwidth of the optical fiber.

54953596, Feb 27, 1996

Jul 7, 1994

8/271803

Eitan Gertel - Lansdale PA
Mark S. Colyar - Newtown PA

AEL Industries, Inc. - Lansdale PA

G02B 612

359245

A variable sensitivity compensation network for a Mach-Zender optical modulator comprising first and second pilot signal sources f. sub. 1 and f. sub. 2, a signal coupler for combining the pilot signals with an RF information signal for modulating a bias-controlled Mach-Zender optical modulator, a variable sensitivity feedback loop comprising an optical detector for detecting the pilot signals from the modulator output, a bandpass filter for selecting the sum frequency f. sub. 1 and f. sub. 2, a voltage variable attenuator for adjusting the sensitivity of the loop, a logarithmic compression circuit for compressing the f. sub. 1 and f. sub. 2 signal level from the variable attenuator, means for measuring the signal level, means for controlling the variable attenuator and means for producing an analog bias signal for controlling the operating point of the Mach-Zender modulator. The measuring and controlling means include a microprocessor.

51646927, Nov 17, 1992

Sep 5, 1991

7/755263

Eitan Gertel - Lansdale PA
Baruch Even-Or - Chalfont PA

AEL Defense Corp. - Lansdale PA

H01P 308

333238

A transmission line comprising first and second planar dielectric layers. Each layer has a first surface and a second surface. The first surface of each layer has a plurality of electrical conductors thereon defining a center conductor and at least two other conductors, one on either side of and spaced from the center conductor. The second surface of each layer has an electrically conductive ground plane thereon. The first surface of one layer is opposed to the first surface of the other layer, with the conductors on the first surface of the one layer being in registry with and in physical and electrical contact with the conductors on the first surface of the other layer. A plurality of conductors are provided for making electrical contact with the ground planes and each of the at least two conductors for causing the ground planes and each of the at least two conductors to be at substantially the same electrical potential.

54264332, Jun 20, 1995

Sep 14, 1993

8/121129

Eitan Gertel - Lansdale PA

AEL Industries, Inc. - Lansdale PA

G01S 738

342 15

A radio frequency pulse multiplier for producing coherent multiples of radio frequency (rf) pulses comprising an input terminal for receiving rf pulses, a signal divider for providing a plurality of pulses in response to an input pulse, the output of the signal divider coupled to a plurality of signal paths, each respective path comprising a time delay element providing a selectable delay to a respective pulse, a signal combiner for combining the plurality of pulses on a single output, and an output terminal. The output of the multiplier comprises pulses delayed by amounts equal to the preselected delays in the respective signal paths of the multiplier. The multiplier may comprise signal conditioning elements for conditioning the rf pulses within the multiplier. In another embodiment of the invention, a plurality of the pulse multiplier may be arranged in a cascade, whereby the cascade produces a number of pulses that is the arithmetic product of the number of pulses produced in the respective stages of the cascade. The multiplier may further embody a notch filter for substantially rejecting an rf pulse train of frequency f by selecting the time delay equal to the period 1/f of the input pulse frequency.