OPTICAL TRANSMITTING MODULE

摘要

PROBLEM TO BE SOLVED: To provide an optical transmitting module capable of providing low chirp characteristics without being biased and simultaneously capable of improving the deterioration of high frequency response characteristics owing to the accumulation of a photocarrier. SOLUTION: In an optical communication module including an electric field absorbing type optical modulator, a means which changes the absorption end wavelength of the absorption layer of the electric field absorbing type modulator in parallel to the propagating direction of light is provided.