PATENT CLAIM ANALYSIS

Application Number: 16166943
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-10
Patent Classification: ["398", "208000"]

Abstract:
A system and method are disclosed to characterize and correct for the effects of IQ skew and insertion loss in a coherent optical transmitter. The coherent optical transmitter receives a digital data signal including in-phase (I) and quadrature (Q) components and generates corresponding first and second dither signals. The first dither signal may be combined with the I component and the second dither signal may be combined with the Q component to generate I and Q combined signals, which may be converted into I and Q analog waveforms. An optical signal may be generated corresponding to the I and Q analog waveforms for transmission over an optical fiber. The IQ skew and/or insertion loss for the coherent optical transmitter may then be calculated based on the optical signal using the disclosed dither tone processing techniques in order to correct IQ skew and/or insertion loss impairment.

Claim (Index 1):
A coherent optical transmitter comprising:\n a processor configured to receive a digital data signal carrying digitized user data, the digital data signal including an in-phase (I) component and a quadrature (Q) component; the processor comprising:\n a first dither signal generator configured to generate a first dither signal, \n a second dither signal generator configured to generate a second dither signal, \n a first combiner configured to combine the first dither signal with the I component of the digital data signal to generate an I combined signal, \n a second combiner configured to combine the second dither signal with the Q component of the digital data signal to generate a Q combined signal, \n a first digital-to-analog converter configured to convert the I combined signal into an I analog waveform, and \n a second digital-to-analog converter configured to convert the Q combined signal into a Q analog waveform; \n an optical transmitter frontend configure to generate an optical signal corresponding to the I and Q analog waveforms for transmission over an optical fiber; and a dither tone processor configured to calculate, based on the optical signal, at least one of an IQ skew and an insertion loss associated with the coherent optical transmitter and provide the at least one of the IQ skew and the insertion loss to the processor to correct for an impairment associated with the at least one of IQ skew and the insertion loss.

Metadata:
- Claim Count in Document: 40.0
- Percentile: 97.0
- Lexical Diversity: 2.1831
- Patent Class: 398.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15841789', '15256173', '13404851', '15256210', '14132285']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6740905556998983
- 35 USC 102 Novelty (BERT): 0.514737261667607
- Combined Prediction Score: 0.6581552262966692
- Mean Citation Score: 214.623384
- Max Citation Score: 240.33011
- Similarity Product: 168.43190770255387

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

Dataset: test