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High quality photonic crystal waveguide filters based on mode-gap effect

Shahid, Naeem; Naureen, Shagufta; Li, Mingyu; Swillo, Marcin; Anand, S

Description

We demonstrate that the side-wall profiles of high-aspect-ratio two-dimensional (2D) photonic crystals (PhCs) in InP-based materials can be made vertical by reshaping through annealing. The annealing reduces depth and shape irregularities which are inherent to the etch-process. The efficacy of the reshaping is demonstrated by comparing the optical properties of PhC waveguides having as-etched and reshaped PhC-hole geometries. Spectral characteristics of ministop-bands (MSBs), due to coupling of...[Show more]

dc.contributor.authorShahid, Naeem
dc.contributor.authorNaureen, Shagufta
dc.contributor.authorLi, Mingyu
dc.contributor.authorSwillo, Marcin
dc.contributor.authorAnand, S
dc.coverage.spatialBerlin
dc.date.accessioned2015-12-10T23:19:27Z
dc.date.createdMay 22-26 2011
dc.identifier.isbn9781457717536
dc.identifier.urihttp://hdl.handle.net/1885/65921
dc.description.abstractWe demonstrate that the side-wall profiles of high-aspect-ratio two-dimensional (2D) photonic crystals (PhCs) in InP-based materials can be made vertical by reshaping through annealing. The annealing reduces depth and shape irregularities which are inherent to the etch-process. The efficacy of the reshaping is demonstrated by comparing the optical properties of PhC waveguides having as-etched and reshaped PhC-hole geometries. Spectral characteristics of ministop-bands (MSBs), due to coupling of third and fifth order modes with the fundamental mode, are used to qualify PhC fabrication. We demonstrate high optical quality filters based on the MSB effect (first and fifth order modes) and also use the spectral characteristics as a quality indicator of PhC fabrication. The MSBs transmission spectrum shows very sharp cut-offs for reshaped PhC waveguides. It is proposed that the reshaping process using annealing may also be beneficial for other PhC devices, nanostructure geometries and materials.
dc.publisherIEEE
dc.relation.ispartofseries2011 Compound Semiconductor Week and 23rd International Conference on Indium Phosphide and Related Materials, CSW/IPRM 2011
dc.sourceConference Proceedings - International Conference on Indium Phosphide and Related Materials
dc.subjectKeywords: Fundamental modes; High aspect ratio; High quality; InP-based materials; Optical qualities; Photonic crystal waveguide; Quality indicators; Reshaping process; Shape irregularity; Side walls; Spectral characteristics; Transmission spectrums; Two dimensiona
dc.titleHigh quality photonic crystal waveguide filters based on mode-gap effect
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2011
local.identifier.absfor020404 - Electronic and Magnetic Properties of Condensed Matter; Superconductivity
local.identifier.absfor100706 - Nanofabrication, Growth and Self Assembly
local.identifier.ariespublicationU3488905xPUB1185
local.type.statusPublished Version
local.contributor.affiliationShahid, Naeem, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationNaureen, Shagufta, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLi, Mingyu, Royal Institute of Technology
local.contributor.affiliationSwillo, Marcin, Royal Institute of Technology
local.contributor.affiliationAnand, S, KTH-Royal Institute of Technology
local.description.embargo2037-12-31
dc.date.updated2016-02-24T09:57:44Z
local.identifier.scopusID2-s2.0-84863260496
CollectionsANU Research Publications

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