Yuji AZUMA


Fiber Endface Sealing Technique for Optical Connection of Holey Fibers with Low Loss and Reflection
Masaki WAKI Kyozo TSUJIKAWA Yuji AZUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Vol. E95-B  No. 5  pp. 1620-1624
Type of Manuscript:  PAPER
Category: Optical Fiber for Communications
Keyword: 
HAFPCFoptical connector
 Summary | Full Text:PDF(1.5MB)

Optical Fiber Connection Navigation System Using Visible Light Communication in Central Office with Economic Evaluation
Masaki WAKI Shigenori URUNO Hiroyuki OHASHI Tetsuya MANABE Yuji AZUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Vol. E95-B  No. 5  pp. 1633-1642
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
FTTHintegrated distribution module (IDM)visible light communication (VLC)human error preventioninstallation costoperating expense (OPEX)
 Summary | Full Text:PDF(9.4MB)

Single-Mode Hole-Assisted Fiber Cord for Highly Reliable Optical Fiber Distribution Facilities in Central Office
Shinichi AOZASA Yoshitaka ENOMOTO Hiroyuki OOHASHI Yuji AZUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 876-881
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
optical fiberhole-assisted fiberbending lossoptical fiber distributioncentral office
 Summary | Full Text:PDF(1.3MB)

Maintenance and Operation Technologies for Optical Access Fiber Network Infrastructure
Yuji AZUMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1152-1157
Type of Manuscript:  INVITED PAPER (Special Section on Photonic Technologies for Access Networks)
Category: 
Keyword: 
maintenanceoperationoptical access networktesting and monitorline switching
 Summary | Full Text:PDF(1.5MB)

Pulse Propagation in a Single-Mode Optical Fiber with Complex Higher Order Dispersions
Heihachi SATO Yuji AZUMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/08/25
Vol. E72-E  No. 8  pp. 919-926
Type of Manuscript:  PAPER
Category: Electro-Optics
Keyword: 
 Summary | Full Text:PDF(537.2KB)

Temperature Dependence of Pulse Waveform Distortion in a Step-Index Type Multimode Infrared Optical Fiber
Yuji AZUMAI Heihachi SATO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/11/25
Vol. E70-E  No. 11  pp. 1150-1154
Type of Manuscript:  PAPER
Category: Electro-Optics
Keyword: 
 Summary | Full Text:PDF(386.6KB)

Effect of Higher Order Modes on Pulse Waveform in a Multimode Optical Fiber
Yuji AZUMAI Heihachi SATO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/07/25
Vol. E70-E  No. 7  pp. 652-660
Type of Manuscript:  PAPER
Category: Cables and Waveguides
Keyword: 
 Summary | Full Text:PDF(749.7KB)

Refractive Index Distribution Measurement Using a Set of Launching Single-Mode and Receiving High NA Optical Fibers
Yuji AZUMA Hisashi MURATA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Vol. E70-E  No. 4  pp. 291-293
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE)
Category: Optoelectronics
Keyword: 
 Summary | Full Text:PDF(172.5KB)