Location History:
- Parsippany, NJ (US) (1986 - 1987)
- Whippany, NJ (US) (1995)
Company Filing History:
2 out of 3,345 
1 out of 29 
1 out of 4,208 
Years Active: 1986-1995
Title: Yan-Chi Shi: Innovator in Optical Communication Technologies
Introduction
Yan-Chi Shi is a notable inventor based in Parsippany, NJ (US), recognized for his contributions to optical communication technologies. He holds a total of 3 patents, showcasing his innovative approach to enhancing communication systems.
Latest Patents
One of his latest patents is titled "Optical successive modulation-multiplexing for fiber optical network." This invention describes a multiple-access network communication system that utilizes a single continuous-wave optical carrier. The system is designed to be successively modulated and multiplexed at various data access nodes, which are cascaded along an optical propagation path. Each node impresses the optical carrier with a modulated electrical signal that corresponds to a unique subcarrier frequency. The invention allows for bidirectional communication, enhancing the efficiency of data transmission.
Another significant patent is the "Plural-channel optical rotary joint." This invention features a first pair of light beam expanding graded index (GRIN) lenses coupled to lightguide fibers, facilitating signal coupling through the rotary joint interface. The design includes a second pair of lightguide fibers and GRIN lenses that are off-axis, allowing for effective signal transmission across the interface. The invention also provides a method for compensating for lens irregularities, further improving performance.
Career Highlights
Yan-Chi Shi has had a distinguished career, working with prominent organizations such as AT&T Bell Laboratories and AT&T Company. His experience in these leading companies has significantly contributed to his expertise in optical technologies.
Collaborations
Throughout his career, Yan-Chi Shi has collaborated with notable professionals, including Edward E. Harstead and Leon Klafter. These collaborations have likely enriched his work and led to innovative advancements in the field.
Conclusion
Yan-Chi Shi's contributions to optical communication technologies through his patents and career achievements highlight his role as a significant innovator in the industry. His work continues to influence advancements in communication systems, showcasing the importance of innovation in technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.