Location History:
- Kyunggi-Do, KR (1999)
- Daejeonkwangyeok, KR (2002)
Company Filing History:
1 out of 131,214 
1 out of 2,607 
Years Active: 1999-2002
Title: Jin-Hwan Jang: Innovator in Optical Transmission Technologies
Introduction
Jin-Hwan Jang is an accomplished inventor residing in Daejeonkwang, South Korea. He has made significant contributions to the field of optical transmission, holding two notable patents that showcase his innovative capacity.
Latest Patents
Jang's latest patents include the development of a cold-start wavelength-division-multiplexed (WDM) optical transmission system. This system employs a synchronized etalon filter, distributed feedback (DFB) lasers, and passive optical demultiplexers for enhanced performance. The ingenuity of the design allows the DFB lasers to operate within half of the channel spacing from a standardized wavelength without prior knowledge of operating conditions. Furthermore, the output power of each laser is automatically adjusted to a desired value, facilitating seamless operation.
Another notable invention by Jang is the sliding-frequency guiding filter designed for soliton transmission. This innovative filter guides soliton pulses to multiple resonant frequencies by automatically offsetting its peak resonant frequency in response to incoming soliton signals. The design incorporates a coupler, a wafer with a selective coating, and a thermoelectric cooler, allowing for efficient usage across long-distance soliton transmission lines.
Career Highlights
Jang has an impressive career, having worked with renowned companies such as Samsung Electronics Co., Ltd. and the Korea Advanced Institute of Science and Technology. His experiences in these prestigious organizations have undoubtedly influenced his inventive pursuits.
Collaborations
Throughout his career, Jin-Hwan Jang has collaborated with notable professionals, including Yun-Chur Chung and Seung-Kyun Shin. Their collective expertise in the field has certainly contributed to the advancements achieved in optical transmission technologies.
Conclusion
Jin-Hwan Jang's innovations in the realm of optical transmission underscore his status as a prominent inventor. With his pioneering patents and collaborations, he continues to play a vital role in the advancement of technology, paving the way for future developments in the industry.
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.