Adva Optical Networking Se

Alfred Schwandner

Oliver Bleck

Schemes are provided for starting up optical transmission links where, after a link interruption, endpoints switch into a startup mode original detection state, and a query-transmit pulse goes out at both end points at given time intervals. In a 'TRANSMITTED' handshake mode, in a loop to be passed through n times, and at least once, after the transmission of a transmit pulse, it is detected whether a received pulse is received within a given time span. If no received pulse is received, then the mode is ended and the system is returned to the original detection state. If a received pulse is received, it is answered with another transmit pulse. After the last transmit pulse, if another received pulse occurs within a given time span, the link is activated. If not, the 'TRANSMITTED' handshake mode ends and the system enters the original detection state.

Growing community of inventors

Metzels, Germany

Alfred Schwandner