Jim Tatum

Title: Jim Tatum: Innovator in VCSEL Technology

Introduction

Jim Tatum is a prominent inventor based in Plano, TX (US), known for his significant contributions to the field of vertical-cavity surface-emitting lasers (VCSELs). With a total of 8 patents to his name, Tatum has made remarkable advancements in optical technology that have implications across various industries.

Latest Patents

Among his latest patents, Tatum has developed innovative VCSEL designs that enhance performance and functionality. One notable patent describes a VCSEL with mode control and device coupling. This invention includes an active region configured to emit light, a blocking region defining multiple channels, and conductive channel cores that form an isolation region. The design allows for a common light emitter that can produce single-mode light from the conductive channel cores. Another significant patent focuses on a VCSEL with an elliptical aperture that reduces relative intensity noise (RIN) to less than -140 dB/Hz. This design features an elliptical oxide aperture and an elliptical emission aperture, which work together to improve the device's performance.

Career Highlights

Throughout his career, Jim Tatum has worked with notable companies such as Finisar Corporation and II-VI Delaware, Inc. His work in these organizations has contributed to the advancement of laser technology and optical communications.

Collaborations

Tatum has collaborated with esteemed colleagues, including Gary Landry and James Kenneth Guenter, who have played a role in his innovative projects and research endeavors.

Conclusion

Jim Tatum's contributions to VCSEL technology exemplify his dedication to innovation and excellence in the field. His patents reflect a deep understanding of optical systems and a commitment to advancing technology for various applications.