Optical wavelength converter device.

摘要

An optical wavelength converter device (10) of the optical fiber type includes a core (11) made of a nonlinear optical material and cladding (12) surrounding the core for converting a wave having a fundamental frequency (15), which wave is applied to an end of the core (10a), to its second harmonic and radiating the second harmonic (15') into the cladding in such a way as to eliminate interference between the waves traveling in a guided mode in which the fundamental is guided through the core and the waves traveling in a radiation mode in which the second harmonic is radiated into the cladding. The cladding has a diameter of at least 500 mu m.