Patent ID: 8559822

Claim:
An optical fiber hub, comprising: an upstream interface for receiving a laser beam; an optical booster amplifier optically communicating with the upstream interface, the optical booster amplifier configured for amplifying the laser beam; a light spreading element comprising a flat incident surface and a concave emitting surface opposite to the incident surface, the light spreading element optically communicating with the optical booster amplifier at the flat incident surface, the light spreading element configured for spreading the amplified laser beam so as to increase an irradiation area of the amplified laser beam on the first splitter; N−1 transflective splitters comprising a first splitter, a second splitter, a third splitter, . . . , an (N−1)th splitter, the first splitter of the N−1 transflective splitters arranged on a light path of the light spreading element facing the concave emitting surface and configured for splitting a spread laser beam exiting from the concave emitting surface into a first transmission laser beam and a first reflection laser beam, the first transmission laser beam divided into a second transmission laser beam and a second reflection laser beam by the second splitter, the first reflection laser beam divided into a third transmission laser beam and a third reflection laser beam by the third splitter, it is analogized that, each of the N−1 transflective splitters is configured for splitting the laser beam transmitted on it into a transmission laser beam and a reflection laser beam in the aforementioned manner such that the amplified laser beam is divided into N laser beams; and N downstream interfaces, each of the N downstream interfaces configured for outputting one of the N laser beams, wherein N is an integer which is equal to or greater than 4.