Optical assembly, chip, active antenna unit, baseband unit, base station, and communication system

A chip, comprising an optical assembly which comprises:

• an optical transmitting module, a plurality of optical receiving submodules, a multiplexing module, and a plurality of optical interfaces, wherein
• the optical transmitting module is configured to output a first optical signal and a second optical signal to the multiplexing module;
• the multiplexing module is configured to perform path switching for the first optical signal and the second optical signal, and transmit the first optical signal and the second optical signal to at least one of the plurality of optical interfaces;
• any one of the plurality of optical interfaces is configured to output the first optical signal and/or the second optical signal, or is configured to receive a third optical signal and/or a fourth optical signal and transmit the third optical signal and/or the fourth optical signal to the multiplexing module;
• and
• the multiplexing module is further configured to:
• perform path switching for the third optical signal and transmit the third optical signal to a first optical receiving submodule in the plurality of optical receiving submodules;
• and perform path switching for the fourth optical signal and transmit the fourth optical signal to a second optical receiving submodule in the plurality of optical receiving submodules.