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2020 | Book

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Photonic Waveguide Components on Silicon Substrate

Modeling and Experiments

Authors: Dr. Swagata Samanta, Prof. Pallab Banerji, Dr. Pranabendu Ganguly

Publisher: Springer Singapore

Book Series : SpringerBriefs in Applied Sciences and Technology

Part of: Springer Professional "Business + Economics & Engineering + Technology" , Springer Professional "Engineering + Technology"

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About this book

This book focuses on the design and development of SU-8 polymer and silicon waveguide-based devices using the effective index based matrix method. Various fabrication techniques like laser direct writing (LDW), Focused Ion Beam (FIB) and optical lithography are discussed. FIB lithography has been explored for photonic-crystal structures on the waveguide and for directional coupler in coupled region. This technique is shown to be suitable in fabricating photonic crystal structures as well as for making any precise modifications in micro- and nano-meter photonic waveguide structures. This book can be a useful reference for students, researchers, and fabrication engineers working in the areas of integrated optics, optical communications, laser technology and optical lithography for device manufacturing.

Table of Contents

Frontmatter
Chapter 1. Introduction to Waveguides
Abstract
Optical waveguides are structures which guide waves (flow of optical energy) in the optical spectrum. These can be broadly categorized into planar and non-planar waveguides; non-planar waveguides can be further classified according to geometry, mode structure, refractive index distribution, and material.
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Chapter 2. Theoretical Studies on Silicon and SU-8 Waveguides
Abstract
In this chapter, theoretical studies regarding the design and analysis of silicon and SU-8 polymer waveguides are presented. The study starts with the design of single-mode optical wire waveguide at a transmitting wavelength of 1.55 µm. Effective index-based matrix method (EIMM) was used for this purpose, which is a two-step process. In the first step, effective index method (EIM) was used for vertical refractive index profile of waveguide, and then for the resulted lateral index profile, a transfer matrix method (TMM) was applied. The lateral mode profiles of wire for both transverse electric (TE) and transverse magnetic (TM) polarizations were also calculated using this approach. Bending losses of bend wire were computed using transfer matrix method along with conformal mapping technique.
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Chapter 3. Experimental Studies on SU-8 Wire Waveguides
Abstract
Optical waveguides made of SU-8 polymer are increasingly employed to fabricate passive integrated optic devices, such as gratings, optical filters, and microoptical sensors based on Mach–Zehnder Interferometer, optofluidic, and micro-opto-electro-mechanical systems (MOEMS).
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Chapter 4. Design and Development of Some SU-8 Wire Waveguide Structures
Abstract
This chapter deals with the design and development of wire waveguide structures, viz. directional coupler and micro-ring resonator using SU-8 polymer. For optical integrated circuits based on micro-ring resonators (MRRs), one needs to know the coupling coefficients between straight and curved waveguides, and two curved waveguides accurately to compute the resonance characteristics of a single micro-ring and two coupled micro-rings.
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Chapter 5. Design and Development of Polarization-Independent Power Splitter Using Coupled Silicon Waveguides
Abstract
The design, fabrication, and characterization of 1 × 2 polarization-independent 3-dB power splitter using three-coupled silicon wire/rib waveguides are presented in this chapter.
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Chapter 6. Conclusions and Future Scope of Work
Abstract
The monograph deals with research topic related to polymer and silicon waveguides, and components for integrated optic applications. Effective index-based matrix method (EIMM) was extended to step-index silicon (Si) and polymer (SU-8) waveguides. SU-8 wire waveguides were fabricated by maskless continuous-wave direct laser writing technique at 375 nm writing wavelength; detailed characterizations were made using in-house laboratory facilities to validate the computed results of EIMM.
Swagata Samanta, Pallab Banerji, Pranabendu Ganguly
Metadata
Title
Photonic Waveguide Components on Silicon Substrate
Authors
Dr. Swagata Samanta
Prof. Pallab Banerji
Dr. Pranabendu Ganguly
Copyright Year
2020
Publisher
Springer Singapore
Electronic ISBN
978-981-15-1311-4
Print ISBN
978-981-15-1310-7
DOI
https://doi.org/10.1007/978-981-15-1311-4