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We report on the realization of high-performance silica integratedtwo-dimensional lens assisted beam-steering (LABS) arrays along with thefirst-of-their-kind point-to-multiplepoint optical frequency transfer. {TheLABS equips with $N$ antennas} and has the capability to produce arbitrarynumber of output beams with different output angles with the simple controlcomplexity. We demonstrate that the LABS has 16 scanning angles, which cansupport {the access capability for the maximum of simultaneous 16 user nodes.}The coaxial configuration for transmitting and receiving the light as amonolithic transceiver allows us to reduce the out-of-loop phase noisesignificantly. Finally, the LABS-based non-blocking point-to-multiplepointin-door free-space optical frequency transfer links with 24 m and 50 mfree-space links are shown. After being compensated for the free-space link upto 50 m, the fractional frequency instability of $4.5\times10^{-17}$ and$7.7\times10^{-20}$ at the averaging time of 1 s and 20,000 s, respectively,can be achieved. The present work proves the potential application of the 2DLABS in free-space optical time-frequency transfer and provides a guidance fordeveloping a chip-scale optical time-frequency transfer system.

Free-space point-to-multiplepoint optical frequency transfer with lens assisted integrated beam steering