Optical transceiver, optical communication system, and method for inputting light to optical transceiver

An optical communication system comprising:

• an optical transceiver;
• and
• a light source configured to output a light to the optical transceiver, wherein
• the optical transceiver comprises:
• a first input/output port connected to a communication destination apparatus;
• a second input/output port connected to the light source provided outside;
• an optical signal transmission unit configured to output a first optical signal through the first input/output port, the first optical signal being obtained by modulating the light input from the light source through the second input/output port;
• and
• an optical signal reception unit configured to receive a second optical signal input to the first input/output port from the communication destination apparatus;
• wherein the second optical signal includes a signal specifying a wavelength of the light output from the light source, and
• the optical transceiver outputs a third optical signal to the light source through the second input/output port, the third optical signal being different from the second optical signal and causing the light source to change the wavelength of the light to the specified wavelength.

A method for inputting a light to an optical transceiver, in an optical transceiver comprising:

• a first input/output port connected to a communication destination apparatus;
• a second input/output port connected to a light source provided outside;
• an optical signal transmission unit configured to output a first optical signal through the first input/output port, the first optical signal being obtained by modulating a light output from the light source;
• and an optical signal reception unit configured to receive a second optical signal input to the first input/output port from the communication destination apparatus, wherein the second optical signal includes a signal specifying a wavelength of the light output from the light source, the method comprising:
• outputting a third optical signal to the light source from the optical transceiver through the second input/output port, the third optical signal being different from the second optical signal and causing the light source to change the wavelength of the light to the specified wavelength, and
• inputting the light to the optical signal transmission unit from the light source through the second input/output port.