This paper gives a review for our recent progress on N-fold orbital angular momentum (OAM) multicasting links. By
exploiting optimized complex phase pattern, the data information carried by an input Gaussian mode can be copied and
delivered to multiple OAM modes which are distinguishable from each other owing to their own distinct spiral phase
fronts. Experiment demonstration of 1-to-34 OAM multicasting, adaptive power-controllable OAM multicasting, and
compensation of a distorted OAM multicasting link are presented.
The wrist-pulse is a kind of signals, from which a lot of physiological and pathological status of patients are deduced according to traditional Chinese medicine theories. This paper designs a new optic fiber wrist-pulse sensor that based on a group of FBGs. Sensitivity of the optic fiber wrist-pulse measurement system reaches 0.05% FS and the range reaches 50kPa. Frequency response is from 0 Hz to 5 kHz. A group of typical pulse signal is given out in the paper to compare different status of patient. It will improve quantification of pulse diagnosis greatly.