| 摘要 |
The present invention relates to a multicarrier-based optical transmit subsystem and a method for generating an optical signal. The multicarrier-based optical transmit subsystem includes: a comb-shaped light source apparatus, configured to generate and output polychromatic light; a mirroring group, including multiple microring modulators, where each of the multiple microring modulators includes an input end and a download end, the input end of each of the multiple mirroring modulators is connected to the comb-shaped light source apparatus, and the multiple mirroring modulators each are configured to filter and modulate the polychromatic light, to obtain optical signals with different frequencies, and output the optical signals by using respective download ends of the multiple microring modulators; and a public waveguide, connected to the download ends of the multiple mirroring modulators, and configured to multiplex the optical signals with different frequencies. Optical signals with different frequencies are obtained by filtering and modulating polychromatic light by using a mirroring group, and are output to a public waveguide by using respective download ends of microring modulators. In this way, the polychromatic light can be split, and a modulation signal is loaded to optical carriers obtained by means of filtering, to obtain the optical signals with different frequencies; in addition, by connecting the download ends of the microring modulators in the mirroring group to the public waveguide, the optical signals with different frequencies that are obtained by means of modulation are multiplexed in the public waveguide, so that an extra demultiplexer and wavelength division multiplexer do not need to be disposed in a multicarrier-based optical transmit subsystem, and a structure of the multicarrier-based optical transmit subsystem is simplified, thereby reducing a cost of the multicarrier-based optical transmit subsystem. |
