Steven Jay Wein, 63Tucson, AZ

6856710, Feb 15, 2005

Mar 19, 2002

10/101427

Steven J. Wein - Sudbury MA, US
Arthur Menikoff - Harvard MA, US
James D. Targove - Sudbury MA, US

Terapulse, Inc. - Acton MA

G02B006/00

385 11, 398147, 398152

The present invention provides a method and apparatus for compensating for polarization mode dispersion in an optical transmission system without perturbing the laser source. The present invention compensates for PMD by transferring a sufficient fraction of the light signal in an optical transmission system substantially into a single PSP of the system. As a result, each light pulse in a data stream is not substantially mixed with temporally adjacent light pulses or bit periods.

7106443, Sep 12, 2006

Apr 10, 2003

10/411871

Steven J. Wein - Sudbury MA, US
James D. Targove - Sudbury MA, US

Lighthouse Capital Partners, Inc. - Greenbrae CA

G01J 4/00

356364

Methods and apparatus for rapid, accurate OSNR measurements by directly measuring the spectrally-resolved State of Polarization (SOP) variation across each DWDM channel and using a polarization controller to deterministically extinguish the signal across narrow frequency subbands within each DWDM channel. In-band ASE noise is subsequently measured as a function of frequency across the channel bandwidth.

7894144, Feb 22, 2011

Jun 8, 2007

11/991029

Steven J. Wein - Sudbury MA, US
James D. Targove - Lunenburg MA, US
Arthur Menikoff - Harvard MA, US
Dennis P. Bowler - Sudbury MA, US
David J. Korwan - Westford MA, US

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

G02B 7/02

359811, 359813

In the subject three-axis pointing system, the elevation and tip mirror axes are permanently mounted with their rotation axes orthogonal to each other to eliminate gimbal lock over the hemisphere, to avoid high accelerations as the zenith or nadir pointing directions are approached, and to provide optimal two-axis beam pointing control.

8422013, Apr 16, 2013

Nov 10, 2009

12/812615

Steven J. Wein - Sudbury MA, US
James D. Targove - Lunenburg MA, US
David J. Korwan - Westford MA, US

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

G01J 3/18
G02B 6/34

356334, 356328, 385 37

An apparatus for optical spectrometry utilizes a simplified construction, reducing the number of independent optical elements needed while providing a sizeable dispersed spectrum. The apparatus provides a spectral intensity distribution of an input source wherein individual spectral components in the source can be measured and, in some embodiments, can be manipulated or filtered.

2003006, Apr 10, 2003

Aug 14, 2002

10/218681

Steven Wein - Sudbury MA, US
James Targove - Sudbury MA, US
Arthur Menikoff - Harvard MA, US

Terapulse, Inc. - Acton MA

H04B010/08

359/110000

Apparatus and methods for polarimetric measurements across a spectral range, such as determining the polarimetric state across a wavelength band in a wavelength-division multiplexed fiber optic channel. A variable phase delay is introduced between orthogonal polarization components in an incident light. The resulting intensity changes are used to compute parameters indicative of the polarimetric state of the light. These measurements may be used, for example, for polarimetric imaging, polarimetric component characterization, and measuring polarization states in a fiber link.

2003009, May 22, 2003

Sep 27, 2002

10/259171

Arthur Menikoff - Harvard MA, US
James Targove - Sudbury MA, US
Steven Wein - Sudbury MA, US

Terapulse, Inc. - Acton MA

H04B010/00

359/161000, 359/156000

Methods and apparatus for correcting polarization mode dispersion (PMD) and other transmission distortions in a light signal. By performing measurements of polarization state versus frequency on an intrachannel basis, the first-order and higher-order variations in the polarization state in the channel due to distortions such as PMD may be identified and characterized. Having identified and characterized the variations, the effects of the distortion may be compensated for and substantially eliminated. The methods and apparatus are not limited to single channel configurations but, instead, embrace configuration such as DWDM that carry a plurality of communication channels over a single fiber link.

2003023, Dec 18, 2003

Mar 14, 2003

10/389706

Steven Wein - Sudbury MA, US
David Korwan - Westford MA, US
Charles Houghton - Manchester MA, US
James Targove - Sudbury MA, US

G02B005/30
G02B027/28

359/495000

An athermalized delay line having two optical paths whose difference in optical path length is thermally insensitive. Each optical path typically includes a reflecting quarterwave plate, each path being fed by the output from a polarizing beamsplitter. The delay line is suitable for incorporation into a PMD compensator having at least one compensation stage formed from a polarization controller and an athermalized delay line.

2011026, Oct 27, 2011

Apr 25, 2011

13/093367

Steven J. Wein - Sudbury MA, US
Gerard M. Perron - Acton MA, US
James D. Targove - Lunenburg MA, US

H04N 7/18

348 36, 348E07085

A compact momentum-balanced internal optical scanning mechanism is provided for a wide angle camera used in photo reconnaissance and the like, in which a large high resolution but not fully populated array is used to provide full scene coverage with high pixel densities, in which sharpness is maintained and in which the image can be scanned without vibration due to momentum compensation so that the image may be shifted on the focal plane array in such a manner that images focused on a dark portion of the array will move to an active portion of the array, with the sequential read out of the information concatenated into high resolution full scene image data.