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Paper Abstract and Keywords
Presentation 2011-03-04 10:40
Development of Vertical Spot Size Converter (SSC) with Low Coupling Loss Using 2.5% Silica-Based Planar Lightwave Circuit
Yasuyoshi Uchida, Hiroshi Kawashima, Kazutaka Nara (Furukawa Electric) OFT2010-66 OPE2010-170 Link to ES Tech. Rep. Archives: OPE2010-170
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, new planar lightwave circuit (PLC) components are under study, in response to the requirement of downsizing and cost reduction, to increase their refractive index difference Δ between cladding and core. Accordingly, we are developing 2.5%Δ silica-based PLCs. However, it is difficult to put the 2.5%Δ silica-based PLCs directly into practical applications because their coupling loss with a single mode fiber is as high as 2.9 dB/facet, raising a need for developing a spot size converter (SSC) to lower the loss. We have designed here, therefore, a new vertical SSC that has a broad core expanded in both horizontal and vertical directions, and fabricated the vertical SSC by combining plasma enhanced chemical vapor deposition (PECVD) and shadow mask. As a result, it has been confirmed that the use of the vertical SSC can significantly reduce the coupling loss between the 2.5%Δ waveguide and fiber to 0.06 dB/facet.
Keyword (in Japanese) (See Japanese page) 
(in English) PLC / spot size converter / coupling ratio / ultrahigh Δ / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 436, OFT2010-66, pp. 17-20, March 2011.
Paper # OFT2010-66 
Date of Issue 2011-02-25 (OFT, OPE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Download PDF OFT2010-66 OPE2010-170 Link to ES Tech. Rep. Archives: OPE2010-170

Conference Information
Committee OFT OPE  
Conference Date 2011-03-04 - 2011-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2011-03-OFT-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of Vertical Spot Size Converter (SSC) with Low Coupling Loss Using 2.5% Silica-Based Planar Lightwave Circuit 
Sub Title (in English)  
Keyword(1) PLC  
Keyword(2) spot size converter  
Keyword(3) coupling ratio  
Keyword(4) ultrahigh Δ  
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1st Author's Name Yasuyoshi Uchida  
1st Author's Affiliation The Furukawa Electric Co., Ltd. (Furukawa Electric)
2nd Author's Name Hiroshi Kawashima  
2nd Author's Affiliation The Furukawa Electric Co., Ltd. (Furukawa Electric)
3rd Author's Name Kazutaka Nara  
3rd Author's Affiliation The Furukawa Electric Co., Ltd. (Furukawa Electric)
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Speaker Author-1 
Date Time 2011-03-04 10:40:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2010-66, OPE2010-170 
Volume (vol) vol.110 
Number (no) no.436(OFT), no.437(OPE) 
Page pp.17-20 
#Pages
Date of Issue 2011-02-25 (OFT, OPE) 


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