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Characteristic analysis of tapered lens fibers for light focusing and butt-coupling to a silicon rib waveguide
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2009 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 48, no 4, 672-678 p.Article in journal (Refereed) Published
Abstract [en]

The characteristics of tapered lens fibers (TLFs) are analyzed by using a finite-difference time-domain (FDTD) method. Two types of TLFs are considered, namely a tape red-cladding TLF and a tapered-core TLF The radial FDTD method is first used to simulate light focusing for these two types of TLFs. It is shown that the tapered-core TLF has a smaller focus spot size and a larger transmission loss than the tapered-cladding TLF. The butt-coupling between a TLF of either type and a Si rib waveguide is then simulated by a three-dimensional FDTD method. The tapered-core TLF has a smaller coupling loss to the Si rib waveguide but a similar total loss (the sum of the coupling loss and the transmission loss), as compared with the tapered-cladding TLF

Place, publisher, year, edition, pages
2009. Vol. 48, no 4, 672-678 p.
Keyword [en]
fabrication, converter, microlens, design, size
Identifiers
URN: urn:nbn:se:kth:diva-18271ISI: 000264413400027Scopus ID: 2-s2.0-61449125071OAI: oai:DiVA.org:kth-18271DiVA: diva2:336317
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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He, Sailing

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