3m Innovative Properties Company

Manfred Stieglitz

Johannes Fink

Friedrich Wilhelm Denter

Bernd Lindenbeck

Ulrich Lutterkordt

Michael Mansholt

Manfred Bauer

Michael Bake

Manuel Steinbrink

Herbert Anders

Bernhard Schneider

Joerg Hahn

Ronald L Langsweirdt

Marian Starosta

Fiber network for interrogating fiber-optic sensors in a first Passive Optical Network (PON) and in a second PON, the fiber network comprising a test signal transceiver for emitting query signals and for receiving response signals, a first PON and a second PON. Each PON comprises a light source for generating telecommunication signals and a fiber-optic sensor. Each PON can transmit the telecommunication signals to a plurality of subscribers, and is optically connected to the test signal transceiver such that the query signals can be fed into the respective PON and propagate in the PON to the fiber-optic sensor, and such that the test signal transceiver can receive response signals from the fiber-optic sensor through the PON. The fiber network further comprises a query signal splitter, optically connected to the test signal transceiver and to the PONs such that it can feed a query signal into the PONs simultaneously, and such that it can feed response signals from the PONs into the test signal transceiver.

Fibre network comprising sensors

A remote monitoring system for telecommunication enclosures includes a low profile or flush mounted sealed transceiver or antenna unit, an electronic module inside of the enclosure electrically connected to the transceiver and a communication device to send signals to the electronic module through the transceiver. The sealed housing generally comprises a portion extending through the exterior surface of the enclosure. In some embodiments, the transceiver may include a radio frequency antenna, a photoelectric cell, a light sensor or an infrared sensor, and the communication device may be a handheld device, a transponder, or a networked computer.

Telecommunication enclosure monitoring system

Growing community of inventors

Wuppertal, Germany

Manfred Stieglitz