Opto­Net Sum­mer Course • Fast Phy­si­cal Optics Mode­ling and Design

2023 Sep 11 Mo

bis 15. Sep­tem­ber 2023 | 9:00 – 16:30



The demand for phy­si­cal optics simu­la­tion tech­no­logy has grown distinctly to the point where, for many appli­ca­ti­ons in modern optics, it sim­ply can­not be avo­ided. The­r­e­fore swit­ching to a phy­si­cal optics model only in those parts of the sys­tem where ray tra­cing is not expec­ted to be an accu­rate option risks miss­ing important infor­ma­tion about the sys­tem, mainly due to the mutually incom­pa­ti­ble mathe­ma­ti­cal models – rays and elec­tro­ma­gne­tic fields is necessary.

Fur­ther­more phy­si­cal-opti­cal effects may also be rele­vant in other parts of the sys­tem were they were in prin­ci­ple not expec­ted. This is the jus­ti­fi­ca­tion behind the pro­po­sal for a ›fast phy­si­cal optics‹ approach: a phy­si­cal optics tech­ni­que which includes a gene­ra­liza­tion of ray tra­cing fully embedded inside the over­ar­ching phy­si­cal optics frame­work, and which, con­se­quently, pro­vi­des phy­si­cal optics simu­la­tion results just as fast as ray tracing.

In the Opto­Net Sum­mer Course Fast Phy­si­cal Optics Mode­ling and Design, we will equip you with the neces­sary theo­re­ti­cal and prac­ti­cal know­ledge to make the most of your work with the fast phy­si­cal optics soft­ware Vir­tual­Lab Fusion!


Phy­si­cal optics simu­la­tion tools & tech­no­logy are a must-have for the ana­ly­sis and design of modern sys­tems. In this course we will be employ­ing the com­mer­cial fast phy­si­cal optics mode­ling and design soft­ware Vir­tual­Lab Fusion to inves­ti­gate a series of opti­cal sys­tems taken from a broad range of fields of appli­ca­tion. We will use these examp­les to intro­duce the most important fea­tures and details of the under­ly­ing tech­no­logy of the soft­ware, from a very gene­ral per­spec­tive in the first two intro­duc­tory days, and with a focus on gra­tings as just one part of lar­ger, more com­plex opti­cal sys­tems in the advan­ced course cove­ring the last three days. New fea­tures and chan­ges in the latest soft­ware will of course be covered within this course.

Some of the topics you can expect to hear about: inter­fe­ro­me­try, lens sys­tems, aniso­tropy, fiber cou­pling, ultras­hort pul­ses, meta gra­tings, aug­men­ted and mixed rea­lity light­gui­des, and more!



The course will be taught by experts of the Opti­cal Engi­nee­ring team at Light­Trans. Their daily work in direct cont­act with users of Vir­tual­Lab Fusion from all over the world means that they do not only have in-depth know­ledge of the soft­ware and how it works, but also, cru­ci­ally, of how best to put it to use in order to satisfy the requi­re­ments of a wide range of (curr­ently in-demand) fields of application.



This course is desi­gned for opti­cal sci­en­tists, engi­neers, desi­gners with vary­ing levels of exper­tise with Vir­tual­Lab Fusion in mind, start­ing from total beg­in­ners.  

  • Intro­duc­tion: This two-day course pro­vi­des an over­view of Vir­tual­Lab Fusion’s fast phy­si­cal optics usage and tech­no­logy, and shows how to apply said tech­no­logy to a series of examp­les from a varied range of appli­ca­ti­ons. Beg­in­ner to inter­me­diate level.  
  • Gra­tings and AR & MR: This more advan­ced three-day course focu­ses on gra­tings, start­ing with the many tools available in Vir­tual­Lab Fusion to con­fi­gure very dif­fe­rent types of gra­tings, as well as to cha­rac­te­rize and opti­mize gra­tings as stan­da­lone com­pon­ents (inclu­ding meta­gra­tings); it will then moved on to include those gra­tings in more com­plex sys­tems, where the gra­tings will be accom­pa­nied by other opti­cal com­pon­ents. In the fol­lo­wing part, as a nota­ble appli­ca­tion example,some time will be devo­ted to the mode­ling and design of light­guide devices with gra­ting cou­plers for aug­men­ted and mixed rea­lity appli­ca­ti­ons. Advan­ced level
  • Both: The con­tent of the cour­ses has been desi­gned so that it is pos­si­ble to regis­ter for eit­her of them sepa­ra­tely, or to book both of them tog­e­ther.  


The Sum­mer Course will take place in Jena, the city of Ernst Abbe and Carl Zeiss who laid the foun­da­tion for modern optics 150 years ago. Since then the sci­ence city Jena has been shaped by inno­va­tive, light-based tech­no­lo­gies. Enjoy the spi­rit in the young uni­ver­sity town sur­roun­ded by a magni­fi­cent land­scape and well-known sights of Euro­pean history.

The venue is the Tech­no­logy and Inno­va­tion Park Jena (TIP)

The semi­nar will take place in the new TIP at Moritz-von-Rohr-Straße 1a in Jena. With pro­fes­sio­nal tech­ni­cal equip­ment and a plea­santly undis­tur­bed envi­ron­ment in an inno­va­tive dyna­mic envi­ron­ment, the best con­di­ti­ons for con­cen­tra­ted work are crea­ted. During the breaks, we offer healthy, balan­ced cui­sine for refresh­ment and well-being.


The regis­tra­tion is open. Reser­va­tions are pos­si­ble. Mem­bers from our part­ner clus­ters bene­fit from a con­sidera­ble discount.

Con­fe­rence mate­ri­als, docu­ments and exer­ci­ses are included in the con­fe­rence fee. Par­ti­ci­pants are kindly expec­ted to cover the costs for their indi­vi­dual tra­vel and accom­mo­da­tion. Please bring your own note­book, the requi­red soft­ware will be pro­vi­ded by the organizer.

Atten­dance fees for the Sum­mer Course depend on your pre­fer­red boo­king model:

  • Intro­duc­tion – 2 Days – Sep­tem­ber 11–12, 2023
    690 EUR mem­ber fee (Opto­Net mem­bers, mem­bers of the Regio­nal Net­works of Optec­Net Ger­many and mem­bers of inter­na­tio­nal part­ner networks)
    990 EUR regular
  • Gra­tings – 3 Days – Sep­tem­ber 13–15, 2023
    990 EUR mem­ber fee (Opto­Net mem­bers, mem­bers of the Regio­nal Net­works of Optec­Net Ger­many and mem­bers of inter­na­tio­nal part­ner networks)
    1390 EUR regular
  • Intro­duc­tion + Gra­tings – 5 Days – Sep­tem­ber 11–15, 2023
    1450 EUR mem­ber fee (Opto­Net mem­bers, mem­bers of the Regio­nal Net­works of Optec­Net Ger­many and mem­bers of inter­na­tio­nal part­ner networks)
    2250 EUR regular
  • Intro­duc­tion + Gra­tings – 5 days (for under­gra­duate stu­dents) – Sep­tem­ber 11–15, 2023
    750 EUR par­ti­ci­pant fee (with proof of under­gra­duate studies)

(no VAT included accor­ding to §4 Nr. 22a UStG)

Appli­ca­ti­ons are con­duc­ted through the on-line form. A con­fir­ma­tion email will be sent once the appli­ca­tion has been recei­ved. The par­ti­ci­pant under­ta­kes the respon­si­bi­lity to pay the invoice(s) issued for the ser­vices in advance and before the due date indi­ca­ted on the invoice. Cash or che­ques will not be accepted. The trai­ning fees do not cover tra­vel, accom­mo­da­tion or any other costs such as health insu­rance. All boo­kings are pro­vi­sio­nal until full pay­ment has been recei­ved and ack­now­led­ged. Pro­vi­sio­nal Boo­kings can be reser­ved for up to 2 weeks, pro­vi­ded that the event’s maxi­mum capa­city has not been reached.


The can­cel­la­tion has to be sent by email to ed.anej-tenotpo@ofni
Before August 11: Fees will be fully reim­bur­sed. A EUR 100 hand­ling fee will be with­held. Until August 25: 50% of the total fee will be reim­bur­sed. A EUR 100 hand­ling fee will be with­held. No refunds will be made for can­cel­la­ti­ons after August 25 or for no-shows. In case a par­ti­ci­pant would not be able to attend the trai­ning, a sub­sti­tute can be accepted. Trai­ning will be con­firmed as soon as the mini­mum num­ber of par­ti­ci­pants has been rea­ched. All par­ti­ci­pants will receive a final con­fir­ma­tion. Trai­ning fees are reim­bur­sed in case of can­cel­la­tion due to force majeure or due to spea­k­ers‹ pre­ven­ti­ons. No com­pen­sa­tion will be paid for any addi­tio­nal costs incurred.

The Pro­gram in Detail

Satur­day & Sun­day, Sep­tem­ber 9–10

Arri­val in Jena

Mon­day, Sep­tem­ber 11 | Introduction

8:30 – 9:00
Wel­come & registration

9:00 – 11:00
Part I – Introduction 

  • Why do we need phy­si­cal optics? The trai­ner will explain the phi­lo­so­phy behind Vir­tual­Lab Fusion
  • Field tra­cing enables fast phy­si­cal optics. Key aspects of the tech­no­logy will be pre­sen­ted to you
  • Buil­ding your first opti­cal sys­tem with Vir­tual­Lab Fusion
  • Intro­duc­tion to a fle­xi­ble detec­tor concept.

11:15 – 12:15
Part II

  • The role of the Fou­rier trans­for­ma­tion in the simu­la­tion of diffraction
  • Intro­duc­tion to the cata­lo­gue of algo­rithms for the cal­cu­la­tion of the Fou­rier transformation.
  • Expl­ana­tion of dif­frac­tion inte­grals and the Pois­son spot
  • Con­trol­ling the sel­ec­tion of Fou­rier trans­for­ma­tion algo­rithms, auto­ma­tic sel­ec­tion or tail­o­red con­fi­gu­ra­tion and swit­ching dif­frac­tion on and off
  • Mode­ling of pin­hole in sys­tem with low Fres­nel number
  • Foucault’s knife-edge experiment


13:15 –  14:45
Part III

  • The importance of positioning
  • Non-sequen­tial simu­la­ti­ons: the Light Path Fin­der, the chan­nel con­cept, mas­ter channels
  • Mode­ling of an etalon
  • Exami­na­tion of sodium D lines with a Fabry-Perot etalon
  • Inves­ti­ga­tion of ghost image effects in col­li­ma­tion system

15:00 – 16:30
Part IV

  • Gra­ting order channels
  • Late­ral chan­nels – light­gui­des and micro­lens arrays
  • Simu­la­tion of light pro­pa­ga­tion behind micro­lens array
  • Simu­la­tion of a Shack-Hart­mann sensor

Tues­day, Sep­tem­ber 12 | Introduction

9:00 – 10:30
Part V

  • Advan­ced posi­tio­ning and interferometry
  • Expe­ri­ments with a Mach-Zehn­der – com­ple­men­tary inter­fe­rence pat­tern cau­sed by prism beam split­ter, obser­va­tion of the Gouy phase shift, gene­ra­tion of spa­ti­ally vary­ing polarization

10:45 – 12:15
Part VI

  • Con­nec­ting field sol­vers as the only way to tackle com­plex opti­cal systems
  • Over­view of the cur­rent cata­lo­gue of elec­tro­ma­gne­tic field sol­vers in Vir­tual­Lab Fusion
  • Abbe’s image reso­lu­tion experiment
  • Opti­cal sys­tem for inves­ti­ga­tion of micros­truc­tu­red wafer
  • Biref­rin­gence in cal­cite block, com­plex pola­riza­tion effects in uniaxial crys­tals and coni­cal refrac­tion in biaxial crystals
  • Gui­dance to sel­ect your sol­ver and simu­la­tion of tun­nell­ing effect through air gap in prism beam splitter


13:15 – 14:45
Part VII

  • Advan­ced source mode­ling – the source mode concept
  • White light Michel­son interferometer
  • Demons­tra­tion of opti­cal tomo­gra­phy scan­ning with Michel­son and par­tial tem­po­ral coherence
  • Young’s dou­ble-slit expe­ri­ment with an exten­ded source
  • Pro­pa­ga­tion of ultra-short pulse through high-NA lens
  • Simu­la­tion of Tal­bot effect with unpo­la­ri­zed light
  • Mode­ling of VCSELs and VCSEL arrays

15:00 – 16:30

  • Con­ve­ni­ence tools and para­me­tric optimization
  • Ana­ly­sis and opti­miza­tion of fiber-cou­pling set-up
  • Q & A

Wel­come dinner
Gast­haus Zur Noll

Wed­nes­day, Sep­tem­ber 13 | Gratings

9:00 – 10:30
Part I

  • Gra­ting con­fi­gu­ra­tion and modeling
  • Gra­ting struc­ture specification
  • Elec­tro­ma­gne­tic field sol­vers for gra­tings in Vir­tual­Lab Fusion (Thin Ele­ment Appro­xi­ma­tion, TEA, and Fou­rier Modal Method/Rigorous Cou­pled Wave Ana­ly­sis, FMM/RCWA)
  • Con­ve­ni­ence tools for gra­ting analysis

10:45 – 12:15
Part II

  • Rigo­rous mode­ling examples
  • Bla­zed gra­ting for spec­tral separation
  • Ultras­parse dielec­tric nano-wire grid polarizers
  • Para­me­ter swee­ping tool


13:15 – 14:45
Part III

  • Pre­sen­ta­tion of more examp­les of rigo­rous modeling
  • Simu­la­tion and ana­ly­sis of slan­ted gra­tings with vary­ing parameters
  • Volume holo­gra­phic gra­tings and their sensitivity

15:00 – 16:30
Part IV

  • Gra­tings within opti­cal systems
  • Angu­lar-fil­ter volume gra­ting for hig­her dif­frac­tion order suppression
  • Reso­nant wave­guide gra­ting and its angular/spectral properties
  • Using gra­tings as test objects in ima­ging sys­tems and opti­cal sys­tem for inves­ti­ga­tion of micros­truc­tu­red wafer

Thurs­day, Sep­tem­ber 14 | Gratings

9:00 – 10:30
Part V

  • Gra­ting design/optimization
  • Opti­miza­tion of slan­ted gra­tings for wave­guide coupling
  • Para­me­tric opti­miza­tion tool

10:45 – 12:15
Part VI

  • More gra­ting design and optimization
  • Design of pola­riza­tion-inde­pen­dent high-effi­ci­ency gratings
  • Design of anti­re­flec­tion moth-eye structures


13:15- 14:45
Part VII

  • Intro­duc­tion to Metagrating
  • Rigo­rous ana­ly­sis of nan­o­pil­lars as meta­sur­face buil­ding blocks
  • Design of a bla­zed metagrating

15:00 – 16:30

  • Meta­gra­tings
  • Beam-split­ting meta­gra­ting design
  • IFTA for phase pro­file generation

Fri­day, Sep­tem­ber 15 | Gratings

9:00 – 10:30
Part IX

  • Con­fi­gu­ra­tion of light­guide devices for aug­men­ted and mixed rea­lity appli­ca­ti­ons with gra­ting couplers
  • Idea­li­zed ver­sus real gratings

10:45 – 12:15
Part X

  • Mode­ling of dif­fe­rent light­guide geometries
  • K‑layout repre­sen­ta­tion
  • Simu­la­tion of dif­fe­rent phy­si­cal optics effects in light­gui­des (pola­riza­tion, cohe­rence, diffraction…)


13:15 – 14:45
Part XI

  • Sys­te­ma­tic design tools for light­guide devices and their gra­ting regions
  • Smooth modu­la­tion of gra­ting para­me­ters and sub­se­quent optimization
  • Com­pa­ri­son with para­me­tric opti­miza­tion of seg­men­ted regions

15:00 – 16:30
Part XII

  • Gene­ral Q & A.

16:30 – 17:00
Feed­back & Farewell



We recom­mend the fol­lo­wing hotels near the venue:

Hotel SCALA › chic busi­ness hotel with a fan­ta­stic view over the city of Jena
Hotel Zur Noll › plea­sant down­town hotel with Thu­rin­gian cuisine
Hotel Viel­har­mo­nie › small indi­vi­dual hotel for city tourists
Hotel Eulen­steins › modern bou­tique hotel with eco­lo­gi­cal orientation



By sub­mit­ting this regis­tra­tion form, you agree that your name will be included on a list of par­ti­ci­pants, which will be available to the other par­ti­ci­pants. Fur­ther­more, you agree that pic­tures of the event can be shown on our web­sites and our social media accounts, unless you expli­citly object before the event.



Tech­no­logy and Inno­va­tion Park Jena
Moritz-von-Rohr-Straße 1a
07745 Jena

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Opto­Net e.V.
Svenja Hüb­ner

+49 3641 327 92 94

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