We have initiated experiments of time multiplexing at the emitter, and demultiplexing at the receiver. Femtosecond communication requires accurate synchronization between a laser at the emission and at the reception. We are investigating optical synchronization scheme for which we expect fs jitter, requiring only picowatt injection. Femtosecond Manufacturing New techniques are being investigated to manufacture three dimensional waveguide and modulators required for the high speed communication project cited above. Such modulator could also be used to provide wavefront correction with ns response.
Femtosecond pulses offer the possibility of writing waveguides in the bulk of transparent materials.
Femtosecond UV irradiation is also used for machining grooves and holes with large aspect ratio.