Patent ID: 7447431

Claim:
An optical information transmission system, comprising: a) a plurality of optical transmitters and optical receivers, each transmitter and receiver having ports for interchangeable waveguides, each transmitter having an enable input for receiving an enable signal associated therewith, each transmitter being operative for generating or not generating an optical information signal according to a status of the enable signal; b) a plurality of signal generators each operative for generating the enable signal associated with a respective receiver, the status of the enable signal indicating whether the respective receiver is or is not connected to a respective transmitter by a respective waveguide, each signal generator being connected to the enable input by an enable control line wired independently from the waveguides and being operative for generating the enable signal only if a test signal specific for the respective receiver has before been received at its respective waveguide port; and c) means for transmitting a description of the test signal of the respective receiver to the associated respective transmitter.