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Effects of rounded corners on the performance of an echelle diffraction grating demultiplexer
KTH, Superseded Departments, Electromagnetic Theory.ORCID iD: 0000-0002-3401-1125
2004 (English)In: Journal of Optics. A, Pure and applied optics, ISSN 1464-4258, E-ISSN 1741-3567, Vol. 6, no 8, 769-773 p.Article in journal (Refereed) Published
Abstract [en]

Theeffectsof two different types ofroundedcorneron theperformance(such as the insertion loss, the polarization dependent loss (PDL) and the chromatic dispersion) of anechellediffractiongrating(EDG) demultiplexer are analysed by using an accurate method of moment (MoM). The results show that both the insertion loss and the chromatic dispersion increase rapidly as the radius ofroundedcornersincreases. It is shown that the impact ofroundedtroughs on the PDL is more significant than that ofroundedcrests. The PDL of an EDG demultiplexer can be reduced near the central wavelength at some special values for the radius of theroundedcorners.

Place, publisher, year, edition, pages
2004. Vol. 6, no 8, 769-773 p.
Keyword [en]
demultiplexer, echelle diffraction grating, rounded corners, method of moment, planar waveguide, polarization, insertion loss, PDL, chromatic dispersion, chromatic dispersion, sharp transitions, flat passband, design
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-23678DOI: 10.1088/1464-4258/6/8/005ISI: 000223540500005Scopus ID: 2-s2.0-4043087002OAI: oai:DiVA.org:kth-23678DiVA: diva2:342377
Note
QC 20100525 QC 20110926Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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