Theoretical analysis of multiple-phase-shift-controlled distributed feedback wavelength tunable optical filters

1995 ◽  
Vol 8 (2) ◽  
pp. 72-75 ◽  
Author(s):  
P. W. Tan ◽  
H. Ghafouri-Shiraz ◽  
B. S. K. Lo
Keyword(s):  
Phase Shift ◽  
Theoretical Analysis ◽  
Optical Filters ◽  
Distributed Feedback ◽  
Wavelength Tunable ◽  
Multiple Phase ◽  
Tunable Optical Filters

Distributed feedback lasers with multiple phase‐shift regions

1988 ◽  
Vol 53 (3) ◽  
pp. 178-179 ◽  
Author(s):  
G. P. Agrawal ◽  
J. E. Geusic ◽  
P. J. Anthony
Keyword(s):  
Phase Shift ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Multiple Phase

Analysis of the stability of multiple-phase-shift distributed-feedback semiconductor lasers

1993 ◽  
Vol 71 (1-2) ◽  
pp. 29-38 ◽  
Author(s):  
Yves Champagne ◽  
Nathalie McCarthy
Keyword(s):  
Phase Shift ◽  
Semiconductor Lasers ◽  
Output Power ◽  
Longitudinal Mode ◽  
Single Mode ◽  
Distributed Feedback ◽  
Hole Burning ◽  
Lasing Wavelength ◽  
Multiple Phase ◽  
The Stability

The effects of the longitudinal spatial hole burning on the static lasing characteristics of a specific configuration of distributed-feedback semiconductor laser with three phase-shift regions are investigated using a numerical approach. A serious degradation of the stability of the optimum design, having the flattest axial intensity distribution at low output power, is predicted for drive levels beyond a critical value. The lasing wavelength exhibits a sudden shift (wavelength chirping), along with a significant degradation of the single-mode character of the longitudinal-mode spectrum. Thus, the potentialities of this multiple-phase-shift structure to provide a stable narrow-linewidth emission at high output power appear to be less than expected from results calculated for the near-threshold regime. Nevertheless, it is found that a multiple-phase-shift configuration that departs slightly from the optimum case suffices to recover most of the promises expected from this distributed-feedback laser design.

Optimum design for multiple-phase-shift distributed feedback laser

1988 ◽  
Vol 24 (12) ◽  
pp. 731 ◽  
Author(s):  
S. Ogita ◽  
Y. Kotaki ◽  
H. Ishikawa ◽  
H. Imai
Keyword(s):  
Phase Shift ◽  
Optimum Design ◽  
Distributed Feedback ◽  
Distributed Feedback Laser ◽  
Multiple Phase

Broadly Wavelength Tunable DBR Lasers with Modified Multiple-Phase-Shift Super Structure Grating

1993 ◽  
Author(s):  
H. Ishii ◽  
Y. Tohmori ◽  
M. Yamamoto ◽  
T. Tamamura ◽  
Y. Yoshikuni
Keyword(s):  
Phase Shift ◽  
Super Structure ◽  
Wavelength Tunable ◽  
Multiple Phase ◽  
Dbr Lasers

SEMICONDUCTOR WAVELENGTH TUNABLE OPTICAL FILTERS

1993 ◽  
Vol 02 (04) ◽  
pp. 643-659 ◽  
Author(s):  
T. NUMAI
Keyword(s):  
Wavelength Division Multiplexing ◽  
Direct Detection ◽  
Optical Filters ◽  
Switching Systems ◽  
Switching Speed ◽  
Photonic Switching ◽  
Detection Scheme ◽  
Wavelength Division ◽  
Wavelength Tunable ◽  
Tunable Optical Filters

Wavelength-division multiplexing (WDM) lightwave transmission systems and wavelength-division (WD) photonic switching systems are attractive for improvement in line capacity for lightwave telecommunication services, because they utilize a huge wavelength (frequency) domain as signal channels. Wavelength tunable optical filters are key devices for these WDM and WD systems in direct detection scheme. In particular, semiconductor wavelength tunable optical filters are suitable for monolithic integration with photonic devices such as semiconductor lasers, switches and detectors. Also, the switching speed of wavelength is faster than that of other optical filters. This paper briefly summarizes the state-of-the-art semiconductor wavelength tunable optical filters and their applications to WD photonic switching systems.

Analysis of a λ/4-phase-shifted double phase-shift-controlled distributed feedback wavelength tunable optical filter

1997 ◽  
Vol 33 (4) ◽  
pp. 556-561 ◽  
Author(s):  
H. Ghafouri-Shiraz ◽  
S.-H. Lew ◽  
S. Kobayashi ◽  
I.N. Kamata ◽  
K. Yamada
Keyword(s):  
Phase Shift ◽  
Optical Filter ◽  
Distributed Feedback ◽  
Wavelength Tunable ◽  
Double Phase ◽  
Tunable Optical Filter
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