Abstract

We report what is to our knowledge the first narrow-linewidth, continuously tunable laser that uses an acousto-optic filter to achieve a broad tuning range. The unidirectional ring-laser configuration incorporates an erbium-doped fiber amplifier as the gain medium and an integrated, frequency-shift-compensated acousto-optic filter as the tuning element. Using a 980-nm optical pump with 60 mW of launched power, we obtained nearly 2 mW of laser output with 10% output coupling. A tuning range of 40 nm was achieved, centered about 1545 nm. Single-longitudinal-mode operation with a 10-kHz linewidth was demonstrated, although the laser wavelength hopped between nearby longitudinal modes because of path-length fluctuations. Wavelength switching at rates up to 100 kHz was examined.

© 1991 Optical Society of America

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  1. R. Wyatt, Electron. Lett. 25, 1498 (1989).
    [CrossRef]
  2. C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
    [CrossRef]
  3. M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
    [CrossRef]
  4. P. F. Wysocki, M. J. F. Digonnet, B. Y. Kim, Opt. Lett. 15, 273 (1990).
    [CrossRef] [PubMed]
  5. G. A. Coquin, K. W. Cheung, Electron. Lett. 24, 599 (1988).
    [CrossRef]
  6. D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
    [CrossRef]
  7. W. Streifer, J. R. Whinnery, Appl. Phys. Lett. 17, 335 (1970).
    [CrossRef]
  8. J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
    [CrossRef]
  9. K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.
  10. A. Yariv, Introduction to Optical Electronics (Holt, Reinhart & Winston, New York, 1976).

1990 (3)

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

P. F. Wysocki, M. J. F. Digonnet, B. Y. Kim, Opt. Lett. 15, 273 (1990).
[CrossRef] [PubMed]

1989 (3)

R. Wyatt, Electron. Lett. 25, 1498 (1989).
[CrossRef]

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

1988 (1)

G. A. Coquin, K. W. Cheung, Electron. Lett. 24, 599 (1988).
[CrossRef]

1970 (1)

W. Streifer, J. R. Whinnery, Appl. Phys. Lett. 17, 335 (1970).
[CrossRef]

Andrejco, M. J.

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

Baran, J. E.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

Chen, C. Y.

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

Cheung, K. W.

G. A. Coquin, K. W. Cheung, Electron. Lett. 24, 599 (1988).
[CrossRef]

Cheung, K.-W.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

Choy, M. M.

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

Coquin, G. A.

G. A. Coquin, K. W. Cheung, Electron. Lett. 24, 599 (1988).
[CrossRef]

Digonnet, M. J. F.

Frangen, J.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Hagimoto, K.

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

Heffner, B. L.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

Herrmann, H.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Iwatsuki, K.

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

Johnson, J. J.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

Kim, B. Y.

Kimura, Y.

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

Lin, Chinlon

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

Maeda, M. W.

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

Patel, J. S.

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

Ricken, R.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Saifi, M. A.

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

Saruwatari, M.

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

Seibert, H.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Smith, D. A.

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

Sohler, W.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Strake, E.

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

Streifer, W.

W. Streifer, J. R. Whinnery, Appl. Phys. Lett. 17, 335 (1970).
[CrossRef]

Takoda, A.

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

VonLehman, A.

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

Whinnery, J. R.

W. Streifer, J. R. Whinnery, Appl. Phys. Lett. 17, 335 (1970).
[CrossRef]

Wyatt, R.

R. Wyatt, Electron. Lett. 25, 1498 (1989).
[CrossRef]

Wysocki, P. F.

Yariv, A.

A. Yariv, Introduction to Optical Electronics (Holt, Reinhart & Winston, New York, 1976).

Appl. Phys. Lett. (1)

W. Streifer, J. R. Whinnery, Appl. Phys. Lett. 17, 335 (1970).
[CrossRef]

Electron. Lett. (4)

J. Frangen, H. Herrmann, R. Ricken, H. Seibert, W. Sohler, E. Strake, Electron. Lett. 25, 1583 (1989).
[CrossRef]

R. Wyatt, Electron. Lett. 25, 1498 (1989).
[CrossRef]

G. A. Coquin, K. W. Cheung, Electron. Lett. 24, 599 (1988).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 398 (1989).
[CrossRef]

IEEE Photon. Technol. Lett. (2)

C. Y. Chen, M. M. Choy, M. J. Andrejco, M. A. Saifi, Chinlon Lin, IEEE Photon. Technol. Lett. 2, 18 (1990).
[CrossRef]

M. W. Maeda, J. S. Patel, D. A. Smith, Chinlon Lin, M. A. Saifi, A. VonLehman, IEEE Photon. Technol. Lett. 2, 787 (1990).
[CrossRef]

Opt. Lett. (1)

Other (2)

K. Iwatsuki, A. Takoda, K. Hagimoto, M. Saruwatari, Y. Kimura, in Optical Fiber Communication, Vol. 5 of 1989 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1989), paper PD5.

A. Yariv, Introduction to Optical Electronics (Holt, Reinhart & Winston, New York, 1976).

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Figures (4)

Fig. 1
Fig. 1

Layout of the fiber ring laser with a self-contained two-stage acousto-optic filter as the tuning element.

Fig. 2
Fig. 2

Output spectra of the laser during (a) coarse acoustic tuning with Δfs = 500 kHz, (b) fine tuning with Δfs = 10 kHz but with no birefringence compensation, and (c) with compensation.

Fig. 3
Fig. 3

Tuning curves showing hopping without alignment to the isolator eigenpolarization (open squares) and nearly continuous tuning with proper alignment (open circles).

Fig. 4
Fig. 4

Frequency spectra of the detected laser output (a) directly, showing the relaxation oscillation beats at 12 kHz, and (b) through a 56-km-delayed interferometer, showing broadening that is due to the beating of uncorrelated signals.

Equations (2)

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f s = ( Δ n n V s V o ) f o ,
P = P 0 + P 1 e - α t cos ( ω m t ) ,

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