Viavi Solutions Deutschland Gmbh

Jdsu Deutschland Gmbh

Dominik Prause

A test instrument can be coupled to a test point in a passive optical network to measure optical signals transmitted between an optical line terminal and an optical network unit in the optical network. The test instrument can capture an identifier of the ONU from downstream signals sent from the OLT to the ONU.

Optical network test instrument including optical network unit identifier capture capability from downstream signals

A test apparatus and method for testing passive optical networks is provided. The test apparatus includes an optical circuit having an optical coupler for splitting off a portion of optical traffic. During testing of a passive optical network, the optical circuit is coupled into an optical path of the passive optical network. A bit stream corresponding to an activating procedure is captured and analyzed to extract identification information of the module that sent the bit stream.

Testing a passive optical network

The invention relates to a method and apparatus for synchronizing to upstream bursts of frames when a delimiter pattern normally used for the synchronization is a-priory unknown. The method includes identifying in a specific received signaling burst a sequence of pre-defined fixed bits, determining the position and bit pattern of the identified delimiter based on the found position of the fixed bits in the signaling burst, and using the found delimiter pattern to synchronize to following bursts in a burst stream.

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Reutlingen, Germany

Dominik Prause