WAVELENGTH-TUNABLE PLUGGABLE OPTICAL MODULE, OPTICAL COMMUNICATION SYSTEM AND WAVELENGTH SWITCHING METHOD FOR WAVELENGTH-TUNABLE PLUGGABLE OPTICAL MODULE

摘要

The purpose of the present invention is to prevent a light signal from being sent out to an optical transmission path before the completion of wavelength switching processing in a wavelength-tunable pluggable optical module. A pluggable electric connector (11) is able to communicate a communication data signal and a control signal (CON1) to and from an optical communication device (92). A light signal output unit (13) is configured to be able to selectively output the wavelength of a light signal (LS). A light intensity adjustment unit (14) is able to adjust the light intensity of the light signal (LS). A pluggable optical receptor (15) is able to send out the light signal (LS) to an optical fiber (91). A control unit (12) controls a wavelength switching operation in response to the control signal (CON1). In response to a wavelength switching instruction, the control unit (12) instructs the light intensity adjustment unit (14) to cut off the output of the light signal (LS), after the light signal is cut off, instructs the light signal output unit (13) to switch the wavelength of the light signal (LS), and after the wavelength switching operation, instructs the light signal output unit (13) and the light intensity adjustment unit (14) to output the light signal (LS).