A Special Sampling Structure with an Arbitrary Equivalent-Phase-Shift for Semiconductor Lasers and Multiwavelength Laser Arrays

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.

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Coupled phase-shift distributed-feedback semiconductor lasers for narrow linewidth operation

IEEE Journal of Quantum Electronics ◽

10.1109/3.17330 ◽

1989 ◽

Vol 25 (4) ◽

pp. 678-683 ◽

Cited By ~ 23

Author(s):

T. Kimura ◽

A. Sugimura

Keyword(s):

Phase Shift ◽

Semiconductor Lasers ◽

Distributed Feedback ◽

Narrow Linewidth

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Analysis of the spontaneous emission rate of multiple-phase-shift distributed feedback semiconductor lasers

Electronics Letters ◽

10.1049/el:19900412 ◽

1990 ◽

Vol 26 (10) ◽

pp. 629-631 ◽

Cited By ~ 5

Author(s):

T. Makino

Keyword(s):

Phase Shift ◽

Semiconductor Lasers ◽

Spontaneous Emission ◽

Emission Rate ◽

Distributed Feedback ◽

Spontaneous Emission Rate ◽

Multiple Phase

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Regenerative Phase Shift and Its Effect on Coherent Laser Arrays

IEEE Journal of Quantum Electronics ◽

10.1109/jqe.2011.2148094 ◽

2011 ◽

Vol 47 (7) ◽

pp. 1043-1048 ◽

Cited By ~ 10

Author(s):

Christopher J. Corcoran ◽

Frédéric Durville ◽

Will Ray

Keyword(s):

Phase Shift ◽

Laser Arrays ◽

Regenerative Phase

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MULTIWAVELENGTH LIGHT SOURCE WITH INTEGRATED DFB LASER ARRAY AND STAR COUPLER FOR WDM LIGHTWAVE COMMUNICATIONS

International Journal of High Speed Electronics and Systems ◽

10.1142/s012915649400005x ◽

1994 ◽

Vol 05 (01) ◽

pp. 91-109 ◽

Cited By ~ 4

Author(s):

C.E. ZAH ◽

J. GAMELIN ◽

B. PATHAK ◽

F. FAVIRE ◽

P.S.D. LIN ◽

...

Keyword(s):

Low Cost ◽

Single Mode ◽

Cost Effective ◽

Single Mode Fiber ◽

Laser Source ◽

Photonic Integration ◽

Laser Array ◽

Laser Arrays ◽

Wavelength Division ◽

Multiwavelength Laser

We discuss the advantages of wavelength-division-multiplexed (WDM) lightwave systems and the need for monolithically integrated multiwavelength laser arrays. For WDM light-wave systems to be cost effective, it is important to reduce the per-wavelength component cost. By photonic integration, the packaging and the control circuitry will be shared among all the wavelengths. In this paper, we review the multiwavelength laser arrays, the array coupling, and the photonic integration approach. We have demonstrated the monolithic integration of a 21-wavelength multi-quantum-well distributed-feedback laser array with a star coupler and optical amplifiers on the same chip. Operating a packaged module under CW operation, we obtained as many as 15 individual wavelengths simultaneously launched from one output port of the star coupler of this integrated chip into one lensed single-mode fiber. We also characterized the thermal and the electrical crosstalk from the neighboring lasers. This integrated chip stands a good chance of being a compact and low-cost multiwavelength laser source for future WDM lightwave systems.

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