Laser diode modulator - has laser active zone pumped by pump light of equal or smaller wavelength. Preferably a second laser beam.

摘要

The laser diode modulator includes a laser diode (1) with a laser active zone (2). A laser beam of a wavelength lambda 1, modulatable by a modulation signal, is emitted from the laser active zone. The modulation signal is applied to the electrodes of the laser diode. The laser active zone is pumped with pump light of equal or smaller wavelength lambda 2, preferably in the form of a second laser beam. The laser active zone is coupled to a light waveguide. ADVANTAGE - Does not require DC voltage supply for operation, making it more compact.