Jinendra Kumar Ranka

Title: Jinendra Kumar Ranka: Innovator in Optical Fiber Technology

Introduction

Jinendra Kumar Ranka is a prominent inventor based in Brookline, MA (US). He has made significant contributions to the field of optical fiber technology, holding a total of 4 patents. His work focuses on enhancing communication systems through innovative designs and methodologies.

Latest Patents

Among his latest patents is an optical fiber communication system employing a wavelength converter for broadband transmission. This invention addresses the decoupling of transverse spatial modes in microstructure optical fibers. A properly designed microstructure optical fiber (MOF) can simultaneously exhibit large anomalous dispersion at visible and near-infrared wavelengths while supporting numerous transverse spatial modes that are essentially decoupled from one another, even in the presence of significant perturbations. The design of the MOF includes an inner cladding region comprising at least one thin layer of air holes surrounding a core region. The key to this invention is achieving a relatively large wave vector mismatch between the lowest order modes by appropriately designing the size of the core region and the effective refractive index difference between the core region and the inner cladding region.

In accordance with one aspect of his invention, MOFs are designed to exhibit simultaneously relatively large anomalous dispersion and essentially decoupled transverse spatial modes by making the diameter of the core region less than about 6 µm and ensuring the difference in effective refractive index between the core and cladding regions is greater than about 0.1 (10%). Preferably, the cladding region contains no more than 2 layers of air holes, and the distance between the nearest edges of adjacent air holes is less than about 1 µm. MOFs with these features enable several embodiments of his invention.

Career Highlights

Jinendra Kumar Ranka has worked with Lucent Technologies Inc., where he has been able to apply his innovative ideas in practical settings. His contributions have significantly advanced the field of optical communications.

Collaborations

He has collaborated with notable coworkers, including Robert Scott Windeler and Andrew John Stentz, who have also contributed to advancements in optical technologies.

Conclusion

Jinendra Kumar Ranka's work in optical fiber technology exemplifies innovation and dedication to enhancing communication systems. His patents reflect a deep understanding of the complexities involved in optical fiber design and functionality.