Determination of internal parameters for AlGaN-cladding-free m-plane InGaN/GaN laser diodes

2011 ◽  
Vol 99 (17) ◽  
pp. 171115 ◽  
Author(s):  
R. M. Farrell ◽  
D. A. Haeger ◽  
P. S. Hsu ◽  
K. Fujito ◽  
D. F. Feezell ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Internal Parameters

Determination of internal parameters in blue InGaN laser diodes by the measurement of cavity-length dependent characteristics

2008 ◽  
Vol 93 (1) ◽  
pp. 011105 ◽  
Author(s):  
H. Y. Ryu ◽  
K. H. Ha ◽  
J. K. Son ◽  
S. N. Lee ◽  
H. S. Paek ◽  
...  
Keyword(s):  
Cavity Length ◽  
Laser Diodes ◽  
Internal Parameters

scholarly journals AOC-OPTICS: Automatic Online Classification for Condition Monitoring of Rolling Bearing

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 606
Author(s):  
Hassane Hotait ◽  
Xavier Chiementin ◽  
Lanto Rasolofondraibe
Keyword(s):  
Power Transmission ◽  
Rolling Bearing ◽  
Extraction Methods ◽  
Exponential Model ◽  
Essential Elements ◽  
Online Classification ◽  
Internal Parameters ◽  
Essential Components ◽  
Online Implementation

Bearings are essential components in rotating machines. They ensure the rotation and power transmission. So, these components are essential elements for industrial machines. Thus, real-time monitoring is required to detect a possible anomaly, diagnose the failure of rolling bearing and follow its evolution. This paper presents a methodology for automatic online implementation of fault diagnosis of rolling bearings, by AOC-OPTICS (automatic online classification monitoring based on ordering points to identify clustering structure, OPTICS). The algorithm consists of three phases namely: initialization, detection and follow-up. These phases use the combination of features extraction methods, smart ranking, features weighting and classification by the OPTICS method. Two methods have been integrated in the dimension reduction step to improve the efficiency of detection and the followed of the defect (relief method and t-distributed stochastic neighbor embedding method). Thus, the determination of the internal parameters of the OPTICS method is improved. A regression model and exponential model are used to track the fault. The analytical simulations discuss the influence of parameters automation. Experimental validation shows detection with 100% accuracy and regression models of monitoring reaching R 2 = 0.992 .

A novel method for determination of the maximum stable feedback level in laser diodes

2001 ◽  
Vol 14 (4) ◽  
pp. 345-357 ◽  
Author(s):  
Iestyn Pierce ◽  
Paul Rees ◽  
Paul S. Spencer ◽  
K. Alan Shore
Keyword(s):  
Laser Diodes ◽  
Novel Method ◽  
Feedback Level

Determination of gain in AlGaN cladding free nitride laser diodes

2013 ◽  
Vol 103 (6) ◽  
pp. 061102 ◽  
Author(s):  
G. Muziol ◽  
H. Turski ◽  
M. Siekacz ◽  
M. Sawicka ◽  
P. Wolny ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Nitride Laser
Sign in / Sign up

Export Citation Format

Share Document