Korea Advanced Institute of Science and Technology

Hyun Jay Kang

Young-Jin Kim

Seung-Woo Kim

Byung Jae Chun

Heesuk Jang

Provided are a device and method for free space coherent optical communications by means of an automatic compensation for phase noise in atmosphere using a femtosecond laser optical comb, and more particularly, a device and method for free space coherent optical communications by means of an automatic compensation for phase noise in atmosphere using a femtosecond laser optical comb, in which a phase shift value due to atmospheric turbulence is obtained from reflected light of transmission light generated from a femtosecond laser optical comb and the transmission light is pre-distorted on the basis of the phase shift value, thereby pre-compensating, in a transmission end, for phase noise due to atmospheric turbulence.

Device and method for free space coherent optical communication by means of automatic compensation for phase noise in atmosphere using femtosecond laser optical comb

The present invention relates to a device and a method for performing overall frequency stabilization of a femtosecond laser optical comb by using optical modes directly extracted from the optical comb, and more particularly, to a device and a method for performing overall frequency stabilization of a femtosecond laser optical comb by using optical modes directly extracted from the optical comb capable of stabilizing an overall range of frequencies of the femtosecond laser optical comb by using optical modes directly extracted from the optical comb and generating a cw laser and pulse having an excellent frequency stability and linewidth from the stabilized optical comb.

Device and method for performing overall frequency stabilization of femtosecond laser optical comb by using optical modes directly extracted from optical comb

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Daejeon, South Korea

Hyun Jay Kang