WAVELENGTH VARIABLE LASER, WAVELENGTH VARIABLE LASER DEVICE, AND WAVELENGTH VARIABLE LASER CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To obtain a light of stable output in a desired wavelength.;SOLUTION: A wavelength variable laser 100 includes a DFB portion 2 including a first optical waveguide 10a having a first diffraction grating 31 formed thereon, a DBR portion 3 including a second optical waveguide 10b optically coupled to the first optical waveguide 10a and having a second diffraction grating 32 forming an SSG, and a phase shift portion 4 including a third optical waveguide 10c optically coupled to the first and second optical waveguides 10a and 10b, and adjusting a phase.;COPYRIGHT: (C)2011,JPO&INPIT