Abstract

A Ti:LiNbO3 waveguide phase modulator is used as an external frequency stabilizer to reduce the linewidth of an AlGaAs semiconductor laser. A ring interferometer is used as a frequency discriminator, and a wideband servo controller (dc to 30 MHz) is constructed in which feed-forward control of the external phase modulator is combined with feedback control of the injection current. A linewidth of 45 kHz is obtained.

© 1992 Optical Society of America

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References

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  1. B. Dahmani, L. Hollberg, R. Drullinger, Opt. Lett. 12, 876 (1987).
    [CrossRef] [PubMed]
  2. M. Ohtsu, N. Tabuchi, IEEE J. Lightwave Technol. 6, 357 (1988).
    [CrossRef]
  3. H. R. Telle, Appl. Phys. B 49, 217 (1989).
    [CrossRef]
  4. M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
    [CrossRef]
  5. C. H. Shin, M. Ohtsu, Opt. Lett. 15, 1455 (1990).
    [CrossRef] [PubMed]
  6. M. Okai, T. Tsuchiya, N. Chinone, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1991), p. 654.
  7. J. L. Hall, T. W. Hansen, Opt. Lett. 9, 502 (1984).
    [CrossRef] [PubMed]
  8. G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
    [CrossRef]
  9. C. Salomon, D. Hills, J. L. Hall, J. Opt. Soc. Am. B 5, 1576 (1988).
    [CrossRef]
  10. T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
    [CrossRef]
  11. H. Tsuchida, Y. Mitsuhashi, Appl. Opt. 27, 302 (1988).
    [CrossRef] [PubMed]
  12. H. Tsuchida, Opt. Lett. 15, 640 (1989).
    [CrossRef]
  13. Y. Fujii, S. Tanikoshi, Trans. IECE Jpn. E69, 95 (1986).
  14. APA Optics, Inc., Blaine, Minn., high-speed gallium arsenide modulators.
  15. K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

1990 (2)

M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
[CrossRef]

C. H. Shin, M. Ohtsu, Opt. Lett. 15, 1455 (1990).
[CrossRef] [PubMed]

1989 (3)

H. Tsuchida, Opt. Lett. 15, 640 (1989).
[CrossRef]

H. R. Telle, Appl. Phys. B 49, 217 (1989).
[CrossRef]

T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
[CrossRef]

1988 (3)

1987 (1)

1986 (1)

Y. Fujii, S. Tanikoshi, Trans. IECE Jpn. E69, 95 (1986).

1985 (1)

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

1984 (1)

Chinone, N.

M. Okai, T. Tsuchiya, N. Chinone, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1991), p. 654.

Dahmani, B.

Drullinger, R.

Fujii, Y.

Y. Fujii, S. Tanikoshi, Trans. IECE Jpn. E69, 95 (1986).

Fujiwara, T.

T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
[CrossRef]

Hall, J. L.

Hansen, T. W.

Hills, D.

Hollberg, L.

Hough, J.

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

Kawano, K.

K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

Kerr, G. A.

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

Kourogi, M.

M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
[CrossRef]

Man, C. N.

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

Mitsuhashi, Y.

Mori, H.

T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
[CrossRef]

Murata, M.

M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
[CrossRef]

Noguchi, K.

K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

Nozawa, T.

K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

Ohtsu, M.

C. H. Shin, M. Ohtsu, Opt. Lett. 15, 1455 (1990).
[CrossRef] [PubMed]

M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
[CrossRef]

M. Ohtsu, N. Tabuchi, IEEE J. Lightwave Technol. 6, 357 (1988).
[CrossRef]

Okai, M.

M. Okai, T. Tsuchiya, N. Chinone, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1991), p. 654.

Robertson, N. A.

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

Salomon, C.

Sato, S.

T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
[CrossRef]

Shin, C. H.

Suzuki, T.

K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

Tabuchi, N.

M. Ohtsu, N. Tabuchi, IEEE J. Lightwave Technol. 6, 357 (1988).
[CrossRef]

Tanikoshi, S.

Y. Fujii, S. Tanikoshi, Trans. IECE Jpn. E69, 95 (1986).

Telle, H. R.

H. R. Telle, Appl. Phys. B 49, 217 (1989).
[CrossRef]

Tsuchida, H.

Tsuchiya, T.

M. Okai, T. Tsuchiya, N. Chinone, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1991), p. 654.

Appl. Opt. (1)

Appl. Phys. B (2)

H. R. Telle, Appl. Phys. B 49, 217 (1989).
[CrossRef]

G. A. Kerr, N. A. Robertson, J. Hough, C. N. Man, Appl. Phys. B 37, 11 (1985).
[CrossRef]

Appl. Phys. Lett. (1)

T. Fujiwara, S. Sato, H. Mori, Appl. Phys. Lett. 54, 975 (1989).
[CrossRef]

IEEE J. Lightwave Technol. (1)

M. Ohtsu, N. Tabuchi, IEEE J. Lightwave Technol. 6, 357 (1988).
[CrossRef]

IEEE J. Quantum Electron. (1)

M. Ohtsu, M. Murata, M. Kourogi, IEEE J. Quantum Electron. 26, 231 (1990).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Lett. (4)

Trans. IECE Jpn. (1)

Y. Fujii, S. Tanikoshi, Trans. IECE Jpn. E69, 95 (1986).

Other (3)

APA Optics, Inc., Blaine, Minn., high-speed gallium arsenide modulators.

K. Noguchi, K. Kawano, T. Nozawa, T. Suzuki, in Post-Deadline Papers Technical Digest of Third Optoelectronics Conference (Institute of Electronics, Information and Communication Engineers, Tokyo, 1990), p. 6.

M. Okai, T. Tsuchiya, N. Chinone, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1991), p. 654.

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Figures (3)

Fig. 1
Fig. 1

Schemes for reducing the linewidth of semiconductor lasers (SL’s). (a) Wideband feedback control of the injection current. The error signal obtained with a Fabry–Perot interferometer (FP) and a photodiode (PD) is fed back to the laser injection current, (b) Use of an external phase modulator (PM). The error signal is fed back to the modulator after passing through the integrator (I), (c) Combination of feed-forward control of the phase modulator with feedback control of the injection current used in this research.

Fig. 2
Fig. 2

Block diagram of the experimental setup.

Fig. 3
Fig. 3

Observed self-heterodyne beat spectra. The vertical scale is 2 dB/division. (a) Corresponds to the free-running laser; (b) and (c) correspond to the stabilized laser obtained by controlling the injection current alone and by simultaneously controlling the injection current and the phase modulator, respectively.

Equations (1)

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V rms = V π ( 8 Δ ν FR / π f l ) 1 / 2 ,

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