Company Filing History:
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1 out of 32 
Years Active: 1996-2013
Title: The Innovations of Marc Douay
Introduction
Marc Douay is a notable inventor based in Lille, France. He has made significant contributions to the field of optical technology, holding 2 patents that showcase his innovative spirit and technical expertise. His work primarily focuses on advanced fiber-optic systems that have various applications in telecommunications and medical instrumentation.
Latest Patents
One of Douay's latest patents is for a hybrid microstructured optical fiber designed for guidance through photonic forbidden bands and total internal reflection optimized for non-linear applications. This microstructured optical fiber features a core surrounded by a sheath made from a base material with a specific refraction index. It includes at least two different types of inclusions, each with distinct refraction indices, arranged to ensure effective guidance of light modes.
Another significant patent is for a linearly polarized fiber-optic laser. This invention utilizes a birefringent optic fiber equipped with Bragg gratings at both ends. The light source emits a beam with two polarization modes, and the birefringence of the fiber maintains their separation. The design allows for applications in optical transmission, instrumentation, spectroscopy, medicine, and chemical detection.
Career Highlights
Throughout his career, Marc Douay has worked with prominent organizations such as France Telecom and the University of Science and Technology of Lille. His experience in these institutions has allowed him to develop and refine his innovative ideas in optical technology.
Collaborations
Douay has collaborated with notable colleagues, including Jean-Francedillaois Bayon and Pascal Bernage. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Marc Douay's contributions to optical technology through his patents and collaborations highlight his role as an influential inventor in the field. His work continues to impact various industries, showcasing the importance of innovation in advancing technology.