Company Filing History:
8 out of 104 
7 out of 26 Years Active: 2001-2006
Title: Innovations of Yuqiao Liu in Optical Technology
Introduction
Yuqiao Liu is a prominent inventor based in Sunnyvale, California, known for his significant contributions to optical technology. With a total of 15 patents to his name, Liu has developed innovative solutions that enhance the performance and efficiency of optical devices.
Latest Patents
Among his latest patents is the "Fiber optic tunable add-drop multiplexer/demultiplexer." This invention introduces techniques for calibrating tunable optical devices using a probing signal as a reference. The goal is to achieve accurate control over the absolute wavelength of these devices. A calibrated optical signal, centered at a desired add/drop channel, is introduced into an N-port circulator coupled between two tunable optical devices. When the devices are not tuned exactly at the desired wavelength, a portion of the probing signal is reflected or dropped out. The dropped probing signal is then detected and processed to generate adjustments for controlling the tunable optical devices.
Another notable patent is the "Dynamic multi-channel power equalizer and regulator." This invention discloses optical devices and methods for regulating optical channel signals with specified wavelengths. It employs several variable optical apparatuses, each containing first and second optical channel modules configured at a specific wavelength. An optical regulator, controlled by a stepper motor, is coupled between these modules. When signals with different wavelengths arrive, only the signal at the specified wavelength transmits through the first module, while others are reflected. The transmitted signal is then regulated before passing through the second module, allowing for effective regulation of signals with different wavelengths.
Career Highlights
Yuqiao Liu has worked with notable companies such as Alliance Fiber Optic Products, Inc. and Alliance Fiber Optics Products, Inc. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Liu has collaborated with several professionals in the field, including Wei-Shin Tsay and Peter C Chang. These collaborations have further enriched his work and led to advancements in optical device technology.
Conclusion
Yuqiao Liu's contributions to optical technology through his patents and career achievements highlight his role as an influential inventor in the field. His innovative solutions continue to shape the future of optical devices and their applications.
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.