Abstract: An asymmetric coherent receiver includes an optical front end configured to split a received optical signal into two paths, wherein the split received optical signal experiences a different optical transfer function in one of the two paths; two photodetectors each configured to detect power one of the split received optical signals in each of the two paths to obtain corresponding electrical signals; and circuitry configured to perform electrical domain extraction of information of each of the corresponding electrical signals from the two paths, wherein the different optical transfer function provides additional information utilized in optical field reconstruction via direct detection.

Abstract: This application provides a gesture instruction execution method, apparatus, and system, and a storage medium. One example method includes obtaining a plurality of gesture instructions acting on different areas of a target screen; obtaining an operation area on the target screen corresponding to each of the obtained plurality of gesture instructions; determining, based on the operation area on the target screen corresponding to each of the plurality of gesture instructions and screen ranges to which a plurality of applications on the target screen belong, a target application corresponding to each gesture instruction; and controlling, based on instruction content of each gesture instruction, the target application corresponding to each gesture instruction.

Abstract: An asymmetric coherent receiver includes an optical front end configured to split a received optical signal into two paths, wherein the split received optical signal experiences a different optical transfer function in one of the two paths; two photodetectors each configured to detect power one of the split received optical signals in each of the two paths to obtain corresponding electrical signals; and circuitry configured to perform electrical domain extraction of information of each of the corresponding electrical signals from the two paths, wherein the different optical transfer function provides additional information utilized in optical field reconstruction via direct detection.