Albrecht J Neudecker

6567602, May 20, 2003

Jul 11, 2001

09/902846

Guy A. Cole - Boca Raton FL
Babak B. Makooi - Boca Raton FL
Albrecht Neudecker - Boca Raton FL
Eric Nelson - Boca Raton FL

Siemens Information and Communication Networks, Inc. - Boca Raton FL

G02B 600

385136, 385137

A fiber-optic cable guide includes first and second guide walls, one or more base support elements for connecting the guide walls, and a number of securing elements which extend from the guide walls along a top portion thereof. Each securing member preferably has a length which is shorter than the spacing between the guide walls. This difference in length substantially corresponds to the diameter of a fiber-optic cable. A fastener may be included on a bottom surface of one or more of the guide walls for attaching the guide to a mounting surface, which may be a printed circuit board. Furthermore, the guide walls may be conformed to traverse any desired path along the board.

7146099, Dec 5, 2006

Nov 5, 2002

10/287928

Valey F. Kamalov - Boca Raton FL, US
Albrecht Neudecker - Boca Raton FL, US

Siemens Communications, Inc. - Boca Raton FL

H04B 10/08
H04B 17/00

398 26, 398 27, 398 34, 398 38

In a method of analyzing an optical communications signal, a threshold is established under control of a processor, and a decision circuit compares the amplitude of the signal to the threshold. A counter samples the output of the decision circuit and counts, over many periods of the signal, those samples indicating that the amplitude of the signal is above the threshold. The threshold generating, comparing, and counting are repeated for several thresholds within a range corresponding to an expected amplitude range of the signal. The stored counts and thresholds represent an amplitude histogram N(V) for the signal. The derivative dN/dVof the function N(V) represents the probability density function (PDF) for the signal amplitude and can be used to derive performance information such as bit error rate and optical signal-to-noise ratio (OSNR).

7149424, Dec 12, 2006

Aug 22, 2002

10/225868

Valey F. Kamalov - Boca Raton FL, US
Albrecht Neudecker - Boca Raton FL, US

Siemens Communications, Inc. - Boca Raton FL

H04B 10/08

398 27, 398 25, 398 26, 398 30, 398 31, 398 33, 398 34, 398 38, 398 94, 398 95, 398147, 398155, 398158, 398159, 398162, 398192, 398193, 398194, 398195, 398196, 398197, 398198, 398199, 398208, 398214

A system and method for improving the transmission quality of a WDM optical communications system begins by determining the bit-error rate for an optical channel before forward error correction is performed at a receiver. The pre-corrective bit-error rate is fed back through a feed back circuit that includes a parameter adjustment module which adjusts an optical signal parameter based on the bit-error rate. As examples, the signal parameter may be a channel power, dispersion, signal wavelength, the chirp or eye shape of an optical signal. The feedback circuit may also adjust various parameters within the WDM system, including amplifier gain, attenuation, and power for one or more channels in the system. By adjusting these parameters based on a pre-corrective bit-error rate, transmission quality is improved and costs are lowered through a reduction in hardware.

20030026555, Feb 6, 2003

Aug 1, 2001

09/921410

Eric Nelson - Boca Raton FL, US
Guy Cole - Boca Raton FL, US
Babak Makooi - Boca Raton FL, US
Albrecht Neudecker - Boca Raton FL, US

G02B006/36

385/092000

An optical module includes a base and a plurality of cooling fins mounted to the back surface of a printed wiring board used to support a number of opto-electronic devices. To optimize heat removal; the fins are mounted on the back surface in alignment with the opto-electronic devices mounted on the front surface. The module also includes a number of fiber-optic management features which are mounted on the wiring board or materially integrated with the base and cooling fins. By combining fiber-optic management features with a heat sink, on the opposite side of board-mounted opto-electronic components, the optical module achieves increased packaging density and functionality on a per volume basis compared with its conventional counterparts.