Company Filing History:
Years Active: 2000-2003
Title: Yacov Cohen: Innovator in Optical Signal Processing
Introduction
Yacov Cohen is a notable inventor based in Red Bank, NJ (US), recognized for his contributions to the field of optical signal processing. With a total of two patents to his name, Cohen has made significant advancements that enhance the performance of optical sources.
Latest Patents
Cohen's latest patents focus on apparatus and methods for improving linearity and noise performance of optical sources. The first patent describes a feedback embodiment where a modulation signal, such as a broadband analog CATV signal, is applied to the optical source along with an error signal. This error signal is generated in a feedback path using a high-speed photodiode to detect a portion of the output optical signal. A delay compensation filter in the feedback path corrects for variations in error signal delay as a function of frequency, allowing for correction of source nonlinearity and noise over a broad bandwidth. The second patent presents a feedforward embodiment where an error signal generated from the optical source output is converted to a frequency band outside of the modulation signal bandwidth before being applied to the optical source. This innovation enables inexpensive optical sources, such as digital-grade DFB laser diodes or Fabry-Perot laser diodes, to replace costly highly-linear, low-noise sources in analog signal transmission and other critical applications.
Career Highlights
Cohen is currently employed at Lucent Technologies Inc., where he continues to develop innovative solutions in optical technology. His work has contributed to advancements in the efficiency and cost-effectiveness of optical signal processing.
Collaborations
Cohen collaborates with Thomas Huntington Wood, further enhancing the innovative capabilities within their field.
Conclusion
Yacov Cohen's work in optical signal processing exemplifies the impact of innovation on technology. His patents not only improve performance but also make advanced optical solutions more accessible.