PATENT CLAIM ANALYSIS

Application Number: 15744948
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["398", "193000"]

Abstract:
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.

Claim (Index 8):
A method for free space coherent optical communications by means of an automatic compensation for phase noise in atmosphere using a femtosecond laser optical comb, the method comprising:\n a) generating a plurality of cw laser by extracting and amplifying a plurality of different optical frequencies from a femtosecond laser optical comb stabilized for a frequency standard; b) modulating the remaining cw laser except for one of the CW laser for data transmission; c) forming overlapped light by overlapping the modulated light lasers for the data transmission and the light lasers which are not modulated; d) pre-distorting the overlapped light based on predetermined atmospheric turbulence and transmitting it to a receiver from a transmitter through the free space; and e) measuring and updating the atmospheric turbulence by receiving, by the transmitter, reflected light generated by the overlapped light which is reflected from the receiver and comparing the reflected light with the cw laser which are not modulated, wherein steps b) to e) are repeated until the data transmission is terminated, and the atmospheric turbulence is a change in a frequency and a phase experienced by the cw laser when the cw laser pass through the free space.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.31373
- Patent Class: 398.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15827482', '15744921', '15725849', '15751369', '15703704']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6785694091492408
- 35 USC 102 Novelty (BERT): 0.5156516222908282
- Combined Prediction Score: 0.6622776304633995
- Mean Citation Score: 248.668608
- Max Citation Score: 279.87302
- Similarity Product: 233.6116079839921

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test