4,553,101 11/1985 M e X 359/121 former double-tuned circuit. The link exhibits electrical
4,627,106 12/1986 Drake........... 359/159 transfer efficiency (ie, gain) proportional to the …

BACKGROUND OF THE INVENTION In optical communication systems, messages are
transmitted by carrier waves of optical frequencies that are generated by sources such as …

It is an object of the present invention to provide an optical device with an optical coupler
and an optical amplifier for flexibly and properly adjusting an apparent branching and/or …

An optical switch circuit is con? gured as a matrix array to arbitrarily switch the connections
between optical transmission channels. The optical switch circit com prises a plurality of …

BACKGROUND OF THE INVENTION This invention relates to optical communications
systems, and in particular to a device for diverting light among various optical transmission" …

Distortion in an optical transmission system is signifi cantly reduced by the use of two
modulatable optical sources with non-ideal transfer functions of electric signal to light. The …

An optical switch for switching wavelength multi plexed optical signals between N input links
and M output links is disclosed. The optical switch contains a? rst plurality of input terminals …

The invention relates to a wavelength converter including an interferometer Structure for
delivering an output optical Signal, in which converter a first branch contains a first …

US5227906A - Optical switch array capable of bidirectional signal transfer between a plurality
of terminals - Google Patents US5227906A - Optical switch array capable of bidirectional …

An integrated optical multiplexer-and-demultiplexer com prising an arrayed waveguide
having an optical delay por tion imparting an optical band-pass characteristic, a lens …