Richard Alden DeFelice

Title: Richard Alden DeFelice: Innovator in VCSEL Technology

Introduction

Richard Alden DeFelice is a notable inventor based in Bernardsville, NJ (US). He holds a total of 6 patents that contribute significantly to the field of optoelectronics, particularly in the testing of vertical-cavity surface-emitting lasers (VCSELs). His innovative approaches have paved the way for advancements in this technology.

Latest Patents

One of Richard's latest patents focuses on testing the frontside emission of bottom-emitting VCSELs. This invention involves an array of bottom-emitting VCSELs, which are tested using a probe that includes an optoelectronic array. The probe is aligned and coupled to the top surface of the VCSEL array, allowing for efficient testing. The optoelectronic array consists of driver circuits that energize the VCSELs and photodetection circuits that detect back emission leaking through the top mirror of each VCSEL. This method can also be applied to test bottom-emitting VCSELs individually.

In another embodiment, the probe includes separate electronic and photodetection arrays. The electronic array is coupled to the top surface of the VCSEL array, while the photodetection array is aligned to the bottom of the substrate to detect the primary bottom emission. To address the issue of cross-talk, where emissions from one VCSEL may be detected by an adjacent photodetector, the VCSELs are energized in a predetermined sequence, and the photodetector circuitry is activated in a separate sequence.

Career Highlights

Richard has had a distinguished career, working with prominent companies such as Lucent Technologies Inc. and Agere Systems. His contributions to these organizations have been instrumental in advancing their technological capabilities.

Collaborations

Throughout his career, Richard has collaborated with notable professionals, including Paul A. Sullivan and Ashok V. Krishnamoorthy. These collaborations have further enriched his work and innovations in the field.

Conclusion

Richard Alden DeFelice is a significant figure in the realm of VCSEL technology, with a strong portfolio of patents that reflect his innovative spirit. His work continues to influence advancements in optoelectronics, showcasing the importance of his contributions to the industry.