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Paper Abstract and Keywords
Presentation 2006-08-25 16:10
Optimization of CWDM DFB Lasers by the Reduction of Internal Loss
Atsushi Matsumura, Takashi Kato (SUMITOMO ELECTRIC INDUSTRIES, LTD.) Link to ES Tech. Rep. Archives: EMD2006-48 CPM2006-78 OPE2006-90 LQE2006-55
Abstract (in Japanese) (See Japanese page) 
(in English) We designed the S-band, C-band and L-band DFB lasers for CWDM application. In CWDM systems, uncooled and directly modulated DFB lasers are used, and the eight wavelengths spaced by 20nm from 1470 nm to 1610 nm are multiplexed. Then, in the eight wavelengths, each laser has been demanded to have similar characteristics such as threshold currents and slope efficiencies. In order to improve the laser performances, we designed the lasers to decrease the internal loss values among these bands. As a result, regardless of the peak-wavelength difference, the CWDM DFB lasers showed the low threshold currents (typ. 27 mA) and the high slope efficiencies (typ. 0.27-0.33 W/A) at 85 °C. These results show that these lasers are suitable for using as the uncooled light source in CWDM applications.
Keyword (in Japanese) (See Japanese page) 
(in English) CWDM / DFB lasers / Internal loss / / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 215, LQE2006-55, pp. 123-126, Aug. 2006.
Paper # LQE2006-55 
Date of Issue 2006-08-17 (EMD, CPM, OPE, LQE) 
ISSN Print edition: ISSN 0913-5685
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Download PDF Link to ES Tech. Rep. Archives: EMD2006-48 CPM2006-78 OPE2006-90 LQE2006-55

Conference Information
Committee EMD CPM LQE OPE  
Conference Date 2006-08-24 - 2006-08-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Chitose Arcadia Plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2006-08-EMD-CPM-LQE-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimization of CWDM DFB Lasers by the Reduction of Internal Loss 
Sub Title (in English)  
Keyword(1) CWDM  
Keyword(2) DFB lasers  
Keyword(3) Internal loss  
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1st Author's Name Atsushi Matsumura  
1st Author's Affiliation SUMITOMO ELECTRIC INDUSTRIES, LTD. (SUMITOMO ELECTRIC INDUSTRIES, LTD.)
2nd Author's Name Takashi Kato  
2nd Author's Affiliation SUMITOMO ELECTRIC INDUSTRIES, LTD. (SUMITOMO ELECTRIC INDUSTRIES, LTD.)
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Speaker Author-1 
Date Time 2006-08-25 16:10:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # EMD2006-48, CPM2006-78, OPE2006-90, LQE2006-55 
Volume (vol) vol.106 
Number (no) no.212(EMD), no.213(CPM), no.214(OPE), no.215(LQE) 
Page pp.123-126 
#Pages
Date of Issue 2006-08-17 (EMD, CPM, OPE, LQE) 


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