Detlef Stoll

US Patent:

6731872, May 4, 2004

Filed:

Mar 1, 2000

Appl. No.:

09/515916

Inventors:

Hubert Jaeger - Pullach, DE
Gerhard Stortz - Poing, DE
Detlef Stoll - Boca Raton FL
Reinhard Johannsen - Taufkirchen, DE
Wilhelm-Martin Plotz - Vienna, AT

Assignee:

Siemens Aktiengesellschaft - Munich

International Classification:

H04B 1008

US Classification:

398 9, 398167, 398177

Abstract:

A central equipment is connected by at least two optical fibers to a decentralized optical equipment and the central equipment creates an optical auxiliary signal which is transmitted together with an optical payload signal from the central equipment to the decentralized equipment. The optical auxiliary signal that is received in the decentralized optical equipment is rerouted and transmitted back to the central optical equipment via another optical fiber in addition to a second payload signal, and the reception of the optical auxiliary signal is optically monitored in the central optical equipment to determine if there is a breakage in either one of the fibers extending to the unit.

US Patent:

6850706, Feb 1, 2005

Filed:

Apr 20, 2001

Appl. No.:

09/839350

Inventors:

Hubert Jager - Pullach, DE
Detlef Stoll - Boca Raton FL, US
Gerhard Stortz - Poing, DE

Assignee:

Siemens Aktiengesellschaft - Munich

International Classification:

H04B 1008
H04B 1000

US Classification:

398 31, 398 30, 398 32, 398 33, 398168

Abstract:

An optical auxiliary signal, produced in a central device, is transmitted in addition to a user signal from the central to a remote optical device via at least two optical supply line fibers which are provided for transmitting optical signals between the central and remote optical devices. The optical auxiliary signal received in the remote optical device is diverted, is transmitted via a second optical supply line fiber to the central optical device, and the reception or the absence of the optical auxiliary signal and of the optical user signal in the central optical device are evaluated in order to monitor the operational state of the optical supply line fibers.

US Patent:

6931175, Aug 16, 2005

Filed:

Jul 20, 2001

Appl. No.:

10/343208

Inventors:

Harald Bock - Augsburg, DE
Patrick Leisching - München, DE
Alexander Richter - München, DE
Detlef Stoll - Boca Raton FL, US

Assignee:

Siemens Aktiengesellschaft - Munich

International Classification:

G02B006/28

US Classification:

385 24, 385 17, 398 43

Abstract:

An optical network node is provided having add-drop and/or cross-connect functions, wherein the optical network node includes a first optical line with a first drop branch and a first add branch, and a second optical line with a second drop branch and a second add branch, wherein the first drop branch and the second drop branch are in each case connected to a first cross-connect and to a second cross-connect, the first add branch is connected to the first cross-connect and to the second cross-connect via a first wavelength converter, and the second add branch is connected to the first cross-connect and to the second cross-connect via a second wavelength converter.

US Patent:

7058256, Jun 6, 2006

Filed:

Oct 6, 1999

Appl. No.:

09/807232

Inventors:

Detlef Stoll - Boca Raton FL, US
Harald Bock - Augsburg, DE
Patrick Leisching - München, DE
Christian Scheerer - München, DE
Gerhard Stortz - Poing, DE

Assignee:

Siemens Aktiengesellschaft - Munich

International Classification:

G02B 6/00
G02B 6/28

US Classification:

385 24, 385147, 398 79, 398 87

Abstract:

An optical filter, adjustable add-drop-continue module and circuit for bundled cross-connect functionality, wherein the transmission response of the optical filter is varied by changing its temperature, tuning of the filter can be carried out by mechanical pressure or tension, the filter can be used to produce add-drop-continue modules which are suitable both for add-drop operation and for drop-continue operation, and cross-connect modules can be constructed from the optical filters.

US Patent:

7221873, May 22, 2007

Filed:

Feb 8, 2000

Appl. No.:

09/913987

Inventors:

Harald Bock - 86150 Augsburg, DE
Patrick Leisching - 81247 Muenchen, DE
Detlef Stoll - Boca Raton FL, US

International Classification:

H04B 10/00

US Classification:

398 84, 398 83

Abstract:

The present invention relates to a network node that includes optical add/drop modules such that a module can be exchanged without disruption of the connections.

US Patent:

7266299, Sep 4, 2007

Filed:

Aug 23, 2000

Appl. No.:

09/644881

Inventors:

Harald Bock - Munich, DE
Patrick Leisching - Munich, DE
Alexander Richter - Munich, DE
Detlef Stoll - Boca Raton FL, US

Assignee:

Siemens Aktiengesellschaft - Munich

International Classification:

H04J 14/02

US Classification:

398 85, 398 83, 398 84

Abstract:

A tunable add/drop&continue or drop&continue module comprises two optical filters where at least one is tunable and that are arranged following one another between a branching unit for optical signals and an insertion unit follow a branching unit for optical signals. The reflection attenuation of the one tunable optical filter is lower and the transmission attenuation higher than that of the other optical filter, as a result of which the drop&continue function of the module can be realized without high circuit-oriented expense.

US Patent:

20010053005, Dec 20, 2001

Filed:

Mar 7, 2001

Appl. No.:

09/801400

Inventors:

Harald Bock - Augsburg, DE
Alexander Richter - Muenchen, DE
Patrick Leisching - Muenchen, DE
Detlef Stoll - Boca Raton FL, US

International Classification:

H04B010/20
H04J014/00
H04J014/02

US Classification:

359/124000, 359/119000

Abstract:

Connected into a wavelength division multiplex ring network is a filter arrangement which has a low attenuation only for the individual useful signals of the wavelength division multiplex signal and recombines these, along with launched signals to form a wavelength division multiplex signal.