This inventor holds 2 USPTO granted patents, plus 1 CIPO patent and 1 EPO patent. Top assignees: Alight Photonics Aps, Alight Technologies A/s. Active years: 2010-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2010-2011
Title: The Innovations of Francis Pascal Romstad
Introduction
Francis Pascal Romstad is a notable inventor based in Copenhagen, Denmark. He has made significant contributions to the field of photonic devices, particularly in the development of vertical-cavity surface-emitting lasers (VCSELs). With a total of two patents to his name, Romstad's work showcases his expertise and innovative spirit.
Latest Patents
Romstad's latest patents include a method for fabricating a photonic crystal or photonic bandgap vertical-cavity surface-emitting laser. This invention relates to the fabrication of VCSELs and provides a method for creating a VCSEL that contains a micro/nano-structured mode selective lateral layer. The micro/nano-structured layer is achieved through well-controlled local etching, allowing for precise control over its thickness. This method is particularly significant for controlling the transverse electromagnetic modes of VCSELs.
Another notable patent is for single-mode photonic-crystal VCSELs. This specification discloses a VCSEL device that offers single-mode output and optionally single polarization output. The device utilizes lateral mode confinement through the photonic band-gap effect, achieved by shallow etching in a partial VCSEL top mirror. The design optimizes the VCSEL for single fundamental mode operation, enhancing its performance in various applications.
Career Highlights
Throughout his career, Romstad has worked with several companies, including Alight Photonics ApS and Alight Technologies A/S. His experience in these organizations has contributed to his development as an inventor and has allowed him to collaborate with other professionals in the field.
Collaborations
Romstad has collaborated with notable individuals such as Dan Birkedal and Svend Bischoff. These partnerships have likely enriched his work and led to advancements in the technologies he has developed.
Conclusion
Francis Pascal Romstad's contributions to the field of photonics, particularly through his patents on VCSELs, highlight his innovative capabilities and dedication to advancing technology. His work continues to influence the development of photonic devices, showcasing the importance of innovation in this field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile