Optical module

A method for controlling an optical module comprising a power supply control unit, the method comprising:

• receiving a control signal sent by a main-unit device during power up of the optical module;
• determining whether the control signal is a first-type control signal;
• and
• when the control signal is the first-type control signal, instructing the power supply control unit to stop supplying power.

A method for controlling an optical module by a main-unit device, applied to an optical module comprising a power supply control unit, the method comprising:

• detecting an electrical load of the main-unit device before the optical module is powered up;
• determining whether the electrical load is greater than a preset load value;
• when the electrical load is greater than the preset load value, sending a first-type control signal to the optical module during power up of the optical module, so that the optical module instructs, according to the first-type control signal, the power supply control unit to stop supplying power;
• and
• when the electrical load is not greater than the preset load value, sending a second-type control signal to the optical module during power up of the optical module, so that the optical module instructs, according to the second-type control signal, the power supply control unit to supply power normally.