Wavelength multiplexing system, wavelength adjusting system, and optical transmitter

Abstract

A wavelength multiplexing optical transmitter 100 comprises a laser driving circuit 102 for driving a multi-mode oscillation semiconductor laser 101 and an optical filter 103 for filtering an optical output from said multi-mode oscillation semiconductor laser 101. An electric signal in a desired code form is input in the wavelength multiplexing optical transmitter 100. The electric signal input into the wavelength multiplexing optical transmitter 100, after being introduced into the laser driving circuit 102 in the wavelength multiplexing optical transmitter 100, executes a direct current modulation of the multi-mode oscillation semiconductor laser 101. The multi-mode oscillation semiconductor laser 101 outputs optical signals in response to the electric current input from the laser driving circuit 102. The wavelength multiplexing optical transmitter 100 outputs a wavelength multiplexing optical signal determined by the transmitting wavelength characteristics of the optical filter 103 by filtering the wavelength of the output light from the multi-mode oscillation semiconductor laser 101.

Dependencies are inferred from the claim text.