Casimer M Decusatis

Author:

Casimer M. Decusatis

ISBN #:

0890064644

Author:

Casimer Decusatis

ISBN #:

0122078918

Author:

Casimer Decusatis

ISBN #:

0122078926

Author:

Casimer Decusatis

ISBN #:

0122084314

Author:

Casimer Decusatis

ISBN #:

0124371620

US Patent:

6356367, Mar 12, 2002

Filed:

Oct 28, 1998

Appl. No.:

09/181133

Inventors:

Casimer Maurice DeCusatis - Poughkeepsie NY
William Eric Hall - Clinton CT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04B 1008

US Classification:

359110, 359179

Abstract:

A fiberoptic communications computer program product is presented which allows an open-link condition on one link of a multi-link fiberoptic connection to be propagated to other links of the connection while satisfying the Open Fiber Control safety standard. Each link comprises a duplex link and at least one optical repeater is employed. The at least one optical repeater is adapted to propagate an open-link condition in one link of the multiple duplex links between the links of the fiberoptic connection. Propagating the open-link condition can be accomplished using an out band signal, an electrical wrap mode, or a hybrid approach using both an out band signal and electrical wrap mode. Automatic propagation of a closed-link condition is provided once the originally opened link is closed.

US Patent:

6359709, Mar 19, 2002

Filed:

Oct 28, 1998

Appl. No.:

09/181427

Inventors:

Casimer Maurice DeCusatis - Poughkeepsie NY
William Eric Hall - Clinton CT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04B 1008

US Classification:

359110, 359179

Abstract:

A fiberoptic communications method is presented which allows an open-link condition on one link of a multi-link fiberoptic connection to be propagated to other links of the connection while satisfying the Open Fiber Control safety standard. Each link comprises a duplex link and at least one optical repeater is employed. The at least one optical repeater is adapted to propagate an open-link condition in one link of the multiple duplex links between the links of the fiberoptic connection. Propagating the open-link condition can be accomplished using an out band signal, an electrical wrap mode, or a hybrid approach using both an out band signal and electrical wrap mode. Automatic propagation of a closed-link condition is provided once the originally opened link is closed.

US Patent:

6359713, Mar 19, 2002

Filed:

Oct 28, 1998

Appl. No.:

09/181134

Inventors:

Casimer Maurice DeCusatis - Poughkeepsie NY
William Eric Hall - Clinton CT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03B 1016

US Classification:

359179, 359174, 359110

Abstract:

A fiberoptic communication system is presented which allows an open-link condition on one link of a multi-link fiberoptic connection to be propagated to other links of the connection while satisfying the Open Fiber Control safety standard. Each link comprises a duplex link and at least one optical repeater is employed. The at least one optical repeater is adapted to propagate an open-link condition in one link of the multiple duplex links between the links of the fiberoptic connection. Propagating the open-link condition can be accomplished using an out band signal, an electrical wrap mode, or a hybrid approach using both an out band signal and electrical wrap mode. Automatic propagation of a closed-link condition is provided once the originally opened link is closed.

US Patent:

6415076, Jul 2, 2002

Filed:

Feb 24, 2000

Appl. No.:

09/512249

Inventors:

Casimer M. DeCusatis - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G02B 614

US Classification:

385 28, 385 43

Abstract:

A mode conditioning patch (MCP) is provided for conditioning a single mode fiber optic signal for propagation within a multimode optical fiber. The MCP includes a single mode optical fiber section and a transition region with increasing diameter. The transition region diameter preferably increases to approximately that of a multimode fiber section through which the conditioned signal is to propagate. In one embodiment, the transition region is a flared end of the single mode optical fiber section, which is fabricated of plastic. The single mode optical fiber section with the flared end can be fusion splice joined to the multimode optical fiber section to further enhance mixing of the single mode signal within the multimode fiber optic section.

US Patent:

6438285, Aug 20, 2002

Filed:

May 31, 2000

Appl. No.:

09/583510

Inventors:

Casimer M. DeCusatis - Poughkeepsie NY
Thomas A. Gregg - Highland NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G02B 628

US Classification:

385 24, 370453, 370457, 710 10, 710 11

Abstract:

An initialization facility is provided for a fiber optic data link wherein the link can be initialized in one of a plurality of fiber control modes, including one or more open fiber control (OFC) modes and a non-OFC mode. Initialization may be automatic, being responsive to received optical signals, or user determined. Along with the initialization facility, safety logic is presented which allows the facility to be fully compliant with industry standard laser safety requirements for inherently safe Class 1 operation. Further, logic is provided for controlling resetting of an OFC chip. In one embodiment, the facility can be implemented in an auto-sense circuit coupled between a conventional OFC chip and a transceiver of the fiber optic data link.

US Patent:

6512179, Jan 28, 2003

Filed:

Sep 28, 2001

Appl. No.:

09/966231

Inventors:

Casimer M. DeCusatis - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G02B 600

US Classification:

174135, 385137, 361826, 439942

Abstract:

A cable strain relief device is provided and includes a first support structure, the first support structure having a first support length, a first support width and a first support height and wherein the first support structure includes at least one first support channel for receiving at least one transmission cable, a second support structure, the second support structure having a second support length, a second support width and a second support height and wherein the second support structure includes at least one second support channel for receiving at least one transmission cable and a mounting device, the mounting device having a first side, a second side, a mounting device front, a mounting device rear, a mounting device top and a mounting device bottom, wherein the first support structure is disposed adjacent the first side and wherein the second support structure is disposed adjacent the second side.

US Patent:

6597840, Jul 22, 2003

Filed:

Oct 12, 2001

Appl. No.:

09/976546

Inventors:

Lawrence Jacobowitz - Wappingers Falls NY
Casimer Maurice DeCusatis - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G02B 634

US Classification:

385 37, 359161

Abstract:

A system and method for precisely controlling the wavelength selective function provided by fiber Bragg gratings in optical fiber elements. The system and method exploits a wavelength-locked loop servo-control circuit and methodology that enables real time adjustment of the grating pattern being written to said fiber optical link element by a grating writing source to thereby mutually align a center wavelength of the peaked wavelength selective function resulting from the grating pattern with a center wavelength of the optical signal transmitted over a communication channel provided by the fiber. A real-time adaptive dispersion compensation technique for optical fibers is additionally provided that exploits the wavelength-locked loop servo-control circuit. In the adaptive compensation system, a tunable Bragg grating pattern is re-written to the fiber optical link element by a grating writing source under control of the wavelength-locked loop servo-control circuit in order to mutually align a center wavelength of the peaked wavelength selective function resulting from the grating pattern with a center wavelength of an optical signal to be transmitted over the channel.

US Patent:

6614948, Sep 2, 2003

Filed:

Aug 31, 2001

Appl. No.:

09/943672

Inventors:

Lawrence Jacobowitz - Wappingers Falls NY
Casimer M. DeCusatis - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G02B 626

US Classification:

385 10, 385 8, 385 9, 385 16, 385 17, 385 18

Abstract:

Electrically switchable optical elements, such as application specific integrated elements including filters, lenses and switches, are combined with wavelength locked feedback loops. Electrically Switchable Bragg Grating (ESBG) technology is combined with a wavelength locked feedback loop to provide variable focal length optical systems which automatically adjust the focal length of incident light.