Stanford OSA Seminar Series and demo: Photonics CAD simulation - Thursday 5/17/2007 4:00pm AP299

Meredith M. Lee mmlee at
Mon May 14 07:31:20 PDT 2007

 The student OSA chapter is pleased to announce a talk given by Dr. Richard
J. Black from OptoSapiens Design.
Please see details below.

Structural Invention & Optimized Design of Lightwave Circuits and
Devices: Tapered
Lightguides and Photonic Crystals Richard J. Black

Founder of OptoSapiens Design (

                & Representative for Photon Design (

Thursday, May 17th, 2007 4:00pm.Applied Physics Building, Room 299

Demo/Q&A from 3:00-4:00pm & 5:00-5:30pm, AP 299

State-of-the-art multi-parameter design optimization - local and global -
can both facilitate the development of innovative lightguiding structures
and drastically reduce the design cycle times for photonic devices and
circuits. As an illustrative example we consider application to tapered
lightguide injectors coupling into compact photonic crystal micro-circuits
involving y-junctions and bends. We also show how appropriate choice of
electromagnetic field propagation engines such as the Eigen-Mode Expansion
(EME), the Finite-Difference Time Domain (FDTD) and other methods can
facilitate the understanding of the physics of electromagnetic field
propagation considering modal interferometry and the adiabatic and sudden
approximation limits. The approach is particularly valuable from the
educational and research viewpoints as well as helpful in practical
industrial device optimization.

Dr. Black will be available in AP 299 before and after the seminar to
demonstrate Photon Design software and answer questions. The software
includes CrystalWave and OmniSim (using general purpose time-domain and
frequency-domain solvers, as well as FIMMWAVE (a power mode solver),
FIMMPROP (wave propagation using Eigen-Mode Expansion (EME)), Kallistos
(state-of-the-art optimization), and Cladiss (for semiconductor laser

Dr. Richard J. Black obtained his PhD in optical fiber and waveguide
modeling from the Australian National University (ANU) in 1984 and has spent
the subsequent 23 years in academia and industry working with leading
international groups in photonics in telecom, sensing and optical signal
processing applications. For example, Richard researched and taught at the
Ecole Polytechnique de Montreal pioneering work on tapered and fused fiber
components, was Invited Professor at the Swiss Federal Institute of
Technology, has held visiting positions at Stanford, University of Arizona,
ANU, Universite di Padova, CNET, etc., and has worked with a range of
start-up and other companies in Silicon Valley and elsewhere. In addition to
his work at the device modeling level with Photon Design, Richard also works
on optical fiber sensor systems as Chief Scientist for Intelligent Fiber
Optic Systems which produces fiber Bragg grating sensor interrogators and
Raman-based distributed temperature sensor systems.

This seminar also owes much to Richard's colleagues at Photon Design,
especially (1) Founder & CEO, Dr. Dominic Gallagher (a laser physicist) who
did his PhD at Cambridge University, UK followed by work on optical logic
and gain switching, and two years at the Fraunhofer Institute, helping to
develop some of the world's fastest laser diodes and also working on
inter-sub-band photodetectors, before founding Photon Design in 1991, and
(2) Dr. Tom Felici (a mathematician) who did his Cambridge PhD in
magnetohydrodynamics followed by 8 years lecturing in optimization theory
before joining Photon Design to lead development of FIMMPROP & Kallistos.

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