Randal A Salvatore

Title: Randal A. Salvatore: Innovator in Tunable Laser Technology

Introduction

Randal A. Salvatore is a notable inventor based in Watertown, MA (US). He has made significant contributions to the field of semiconductor devices, particularly in the area of tunable laser technology. With a total of 4 patents to his name, Salvatore's work has advanced the capabilities of laser devices in various applications.

Latest Patents

One of Salvatore's latest patents is for a tunable laser device designed to avoid optical mode hops. This integrated semiconductor device features a wavelength-tunable laser, such as a distributed Bragg reflector (DBR) laser. The design includes a gain section with an active layer and a grating section that also contains an active layer. The device employs a first electrical contact over the gain section to supply current and control the output power of the emitted light. A second electrical contact is provided over the grating section to control the wavelength of the emitted light. This innovative design allows for continuous wavelength tuning without the issues associated with mode hopping, as it breaks the degeneracy of the Bragg modes through current injection rather than facet reflection.

Another significant patent involves a mode-selective facet layer for a pump laser. This semiconductor pump laser incorporates a ridge waveguide electro-optical structure that converts ridge injection current into light. It features an integrated wavelength-selective facet reflector that controls the longitudinal modal operation of the pump laser. The reflector consists of two reflective structures that work together to provide wavelength-selective reflectivity, favoring certain wavelengths over others.

Career Highlights

Throughout his career, Randal A. Salvatore has worked with prominent companies such as Corning Lasertron, Incorporated and Corning Incorporated. His experience in these organizations has contributed to his expertise in laser technology and semiconductor devices.

Collaborations

Salvatore has collaborated with notable individuals in the field, including Richard T. Sahara and Hanh Lu. These partnerships have likely enriched his work and led to further advancements in his inventions.

Conclusion

Randal A. Salvatore's contributions to tunable laser technology demonstrate his innovative spirit and commitment to advancing the field. His patents reflect a deep understanding of semiconductor devices and their applications, making him a significant figure in the world of inventions.