An improved algorithm for estimating parameters of semiconductor lasers
-
1.
Electronics and Informatics School, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
-
2.
College of Information Engineering, Zhengzhou University, Zhengzhou 450052, China
-
Corresponding author:
YU Yan-guang, yuyanguang@hotmail.com
-
Received Date:
2007-04-12
Accepted Date:
2007-08-20
-
Abstract
For the sake of accurately estimating linewidth enhancement factor of semiconductor lasers with external cavity,optical feedback self-mixing interferometric technology and gradient-based optimization algorithm were introduced to achieve best data-theoretical fitting.In addition,an iterate formula was improved with alterable steps introduced.Simulation and experiment data were obtained.The accuracy of algorithm was higher and antinoise capability was better.The simulation result showed that the relative standard deviation of linewidth enhancement factor was less than 2.55% when signal-to-noise ratio was 20dB.Experiment data result showed that the relative standard deviation of linewidth enhancement factor was less than 5.1%.
-
-
References
|
[1]
|
SPENCER M B,LAMB W E.Laser with a transmitting window[J].Phys Rev,1972,27(2):884-897. |
|
[2]
|
DONATI S,GIULIANI G,MERLO S.Laser diode feedback interfe-rometer for measurement of displacements without ambiguity[J].IEEE J Q E,1995,31(1):113-119. |
|
[3]
|
HENRY C H.Theory of the linewidth of semiconductor laser[J].IEEE J Q E,1982,18(2):259-264. |
|
[4]
|
SIMPSON T B,DOFT F,STRZELECKA E.Gain saturation and the linewidth enhancement factor in semicon-doctor lasers[J].IEEE Photonics Technology Letters,2001,13(8):776-778. |
|
[5]
|
HARDER C,VAHALA K,YARIV A.Measurement of linewidth enhancement factor of semiconductor lasers[J].A P L,1983,42(2):328-330. |
|
[6]
|
ARKAWA Y,YARIV A.Energy dependence of linewidth enhancement factor of GaAlAs buried heterostructures[J].A P L,1985,47(11):905-907. |
|
[7]
|
SHTERENGAS L,BELENKY G L,GOUREVITCH A.Measurements of a-factor in 2μm~2.5μm type-Ⅰ In(Al)GaAs Sb/GaSb high power Diode Lasers[J].A P L,2002,81(24):4517-4519. |
|
[8]
|
LIU G,JIN X,CHUANG S L.Measurement of linewidth enhancement factor of semiconductor lasers using an injection-locking technique[J].IEEE Photonics Technology Letters,2001,13(5):430-432. |
|
[9]
|
YU Y G,GUIDO G L,SILVANO D.Measurement of the linewidth enhancement factor of semiconductor lasers based on the optical feedback self-mixing effect[J].IEEE Photonics Technology Letters,2004,16(4):990-992. |
|
[10]
|
XI J T,YU Y G,CHICHARO J F.Estimating the parameters of semiconductor lasers based on weak optical feedback self-mixing interferometry[J].IEEE J Q E,2005,41(8):1058-1064. |
|
[11]
|
YU Y G,GUO Ch J,YE H Y,et al.Pre-processing for the optical feed back self-mixing infer feromitric signal[J].Laser Technology,2008,32(3):265-267(in Chinese). |
-
-
Proportional views
-
Map
DownLoad: