Method for labeling optical fiber wavelength

A method for demodulating an optical fiber wavelength labeled by a transmit end by a receive end, comprising:

• receiving, by a receive end for receiving an optical signal resource, an optical signal after envelope modulation from a transmit end;
• removing an optical wave of the optical signal to obtain a spread message code of the transmit end;
• and
• choosing the spreading code of the receive end, performing sliding despreading on the received spread message code by using the spreading code of the receive end, when the spreading code of the receive end is the same as the spreading code of the transmit end, obtaining the original message code of the transmit end, and obtaining a corresponding wavelength according to the spreading code of the receive end.

A method for labeling an optical fiber wavelength by a system, wherein the system comprises a transmit end and a receive end, and the method comprises:

• performing, by the transmit end, steps of:
• deploying a spreading code on each of the transmit end and the receive end;
• transmitting a message code, and spreading the message code by using the spreading code of the transmit end;
• and
• performing envelope modulation on an optical signal by using the spread message code, transmitting the optical signal after the envelope modulation to the receive end, choosing, by the receive end, the spreading code of the receive end to despread the message code to obtain the original message code of the transmit end, and obtaining a corresponding wavelength according to the spreading code of the receive end;
• and
• performing, by the receive end, steps of:
• receiving, by the receive end for receiving an optical signal resource, the optical signal after the envelope modulation of the transmit end;
• removing an optical wave of the optical signal to obtain the spread message code of the transmit end;
• and
• choosing the spreading code of the receive end, performing sliding despreading on the received spread message code by using the spreading code of the receive end, when the spreading code of the receive end is the same as the spreading code of the transmit end, obtaining the original message code of the transmit end, and obtaining a corresponding wavelength according to the spreading code of the receive end.