Method and apparatus for measuring optical signal-to-noise...

Method and apparatus for monitoring an optical WDM network

Method and apparatus for monitoring WDM optical signal

Method and apparatus for multi-protocol and multi-rate...

Method and apparatus for obtaining status information...

Method and apparatus for optical media access protection in...

Method and apparatus for optical network administration

Method and apparatus for optical signal and noise analysis...

Method and apparatus for path selection and wavelength...

Method and apparatus for providing a more efficient use of...

Method and apparatus for providing controlled impairments to...

Method and apparatus for rapidly measuring optical...

Method and apparatus for sampled optical signal monitoring

Method and apparatus for self-testing of test equipment

Method and apparatus for switching automatically and...

Method and apparatus for testing an optical component

Method and apparatus for testing optical networks

Method and apparatus for testing transmission lines normally...

Method and apparatus for validating a path through a...

Method and arrangements for determining the optical...