Mode-locked semiconductor laser and method of driving the same

Details Mode-locked semiconductor laser and method of driving the same Mode-locked semiconductor laser and method of driving the same

1997-10-09

2000-02-29

Bovernick, Rodney

Coherent light generators

Particular beam control device

Mode locking

372 25, 372 30, 372 50, H01S 3098, H01S 310, H01S 313, H01S 319

Patent

active

060318511

ABSTRACT:
There is provided a mode-locked semiconductor laser including a saturable absorber section, a gain section having the same composition as that of the saturable absorber section, a non-absorptive waveguide section having an absorption edge wavelength shorter than an oscillation wavelength of the gain section, an electroabsorption modulator section having an absorption edge wavelength intermediate between an oscillation wavelength of the gain section and an absorption edge wavelength of the non-absorptive waveguide section, and a distributed Bragg reflector section having the same composition as that of the non-absorptive waveguide section and including a diffraction grating. These five sections are optically coupled to one another in a single waveguide. The above-mentioned mode-locked semiconductor laser makes it possible to enhance an efficiency with which high frequency signals are applied thereto, with conditions for causing saturable absorption operation, such as a section length and a bias voltage, being kept in an optimal range.

REFERENCES:
patent: 5497393 (1996-03-01), Lee
patent: 5586138 (1996-12-01), Yokoyama
Extended Abstracts (The 57th Autumn Meeting, 1996); The Japan Society of Applied Physics, 8p-KL-3, p. 1230. (No Month Available).
S. Arahira et al., "500 GHz Optical Short Pulse Generation From A Monolithic Passively Mode-Locked Distributed Bragg Reflector Laser Diode", pp. 1917-1919, Appl. Physics, Lett. 64, No. 15, Apr. 11, 1994.
K. Sato et al., "Monolithic Strained-InGaAsP Multiple-Quantum-Well Lasers With Integrated Electroabsorption Modulators For Active Mode Locking", pp. 1-3, Appl. Physics, Lett. 65, No. 1, Jul. 4, 1994.
by S. Arahira et al., "Transform-Limited Optical Short-Pulse Generation at High Repetition Rate over 40 GHz from a Monolithic Passive Mode-Locked DBR laser Diode", IEEE Photonics Technology Letters, vol. 5, No. 12, Dec. 1993, pp. 1362-1365.
by T. Hoshida et al., "Generation of 33 GHz stable pulse trains by subharmonic electrical modulation of a monolithic passively mode-locked semiconductor laser", Electronics Letters, vol. 32, No. 6, Mar. 14, 1996, pp. 572-573.
by K. Sato et al., "Monlithic strained-InGaAsP multiple-quantum-well lasers with integrated electroabsorption modulators for active mode locking", Applied Physics Letters, vol. 65, No. 1, Jul. 4, 1994, pp. 1-3.
by E. Lach et al., "Multifunctional Application of Monolithic Mode Locked Laser in (O) TDM Systems: Pulse Generation and Optical Clock Recovery", 22nd European Conference in Optical Communication, ECOC'96, Oslo, Norway, pp. 4.23-4.26.
by D.J. Derickson et al., "Short Pulse Generation Using Multisegment Mode-Locked Semiconductor Lasers", IEEE Journal of Quantum Electronics, vol. 28, No. 10, Oct. 1992, pp. 2186-2202.
D.Y. Kim et al., "Ultrastable Millimetre-wave signal generation using hybrid modelocking of a monolithic DBR laser", pp. 733-734, Electronics Letters vol. 31, No. 9, Apr. 27, 1995.
H.F. Liu et al., "Generation of Wavelength-Tunable Transform-Limited Pulses from a Monolithic Passively Mode-Locked Distributed Bragg Reflector Semiconductor Laser", pp. 1139-1141, IEEE Photonics Technology Letters, vol. 7, No. 10, Oct. 1995.
S. Arahira et al., "Transform-Limited Optical Short-Pulse Generation at High Repetition Rate over 40 GHz from a Monolithic Passive Mode-Locked DBR Laser Diode", pp. 1362-1365 IEEE Photonics Technology Letters, vol. 5, No. 12, Dec. 1993.

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