Abstract

The single-mode linewidth of an erbium-doped, single-frequency, fiber ring laser has been measured by using a newly developed loss-compensated delayed self-heterodyne interferometer that has a resolution of less than 600 Hz. The natural linewidth is determined to have an upper bound of less than 2 kHz. In addition, frequency jitter was found to be dominant over the natural linewidth, yielding an effective linewidth of approximately 4 kHz.

© 1992 Optical Society of America

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References

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  1. N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
    [CrossRef]
  2. J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.
  3. N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
    [CrossRef]
  4. H. Tsuchida, Opt. Lett. 15, 640 (1990).
    [CrossRef] [PubMed]
  5. J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
    [CrossRef]
  6. H. Okamura, K. Iwatsuki, Electron. Lett. 26, 1965 (1990).
    [CrossRef]
  7. D. A. Smith, M. W. Maeda, J. J. Johnson, J. S. Patel, M. A. Saifi, A. Von Lehman, Opt. Lett. 16, 387 (1991).
    [CrossRef] [PubMed]

1992

J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
[CrossRef]

1991

1990

H. Okamura, K. Iwatsuki, Electron. Lett. 26, 1965 (1990).
[CrossRef]

H. Tsuchida, Opt. Lett. 15, 640 (1990).
[CrossRef] [PubMed]

Dawson, J. W.

J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
[CrossRef]

N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
[CrossRef]

J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.

N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
[CrossRef]

Iwatsuki, K.

H. Okamura, K. Iwatsuki, Electron. Lett. 26, 1965 (1990).
[CrossRef]

Johnson, J. J.

Maeda, M. W.

Miller, C.

N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
[CrossRef]

J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.

Okamura, H.

H. Okamura, K. Iwatsuki, Electron. Lett. 26, 1965 (1990).
[CrossRef]

Park, N. K.

J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
[CrossRef]

N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
[CrossRef]

J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.

N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
[CrossRef]

Patel, J. S.

Saifi, M. A.

Sanders, S.

N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
[CrossRef]

Smith, D. A.

Tsuchida, H.

Vahala, K. J.

J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
[CrossRef]

N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
[CrossRef]

J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.

N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
[CrossRef]

Von Lehman, A.

Appl. Phys. Lett.

N. K. Park, J. W. Dawson, C. Miller, K. J. Vahala, Appl. Phys. Lett. 59, 2369 (1991).
[CrossRef]

Electron. Lett.

H. Okamura, K. Iwatsuki, Electron. Lett. 26, 1965 (1990).
[CrossRef]

IEEE Photon. Technol. Lett.

J. W. Dawson, N. K. Park, K. J. Vahala, IEEE Photon. Technol. Lett. 4, 1063 (1992).
[CrossRef]

Opt. Lett.

Other

J. W. Dawson, N. K. Park, C. Miller, K. J. Vahala, in Digest of Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1992), paper WA5.

N. K. Park, S. Sanders, J. W. Dawson, K. J. Vahala, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWE5;S. Sanders, J. W. Dawson, N. K. Park, K. J. Vahala, Appl. Phys. Lett. 60, 2583 (1992).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Erbium-doped fiber ring laser with a loss-compensated delayed self-heterodyne interferometer. EDFA, erbium-doped fiber amplifier module; PC, polarization controller; NB, narrow band; BB, broadband; Pol, polarizer; AOM, acousto-optic modulator.

Fig. 2
Fig. 2

(a) Detected beat-note spectrum between the undelayed laser beam and the delayed beam showing over 70 beat notes (full span 15 GHz, detector bandwidth 15 GHz). (b) Typical spectrum of the delayed self-heterodyne interferometer at 10th order.

Fig. 3
Fig. 3

Measured linewidth of the EDFRL between wavelengths of 1531 and 1538 nm. Circles, aluminum-codoped erbium fiber in the EDFRL; squares, germanium-codoped erbium fiber in the EDFRL.

Fig. 4
Fig. 4

Measured FWHM of the beat-note spectrum plotted versus the delay line length (lower axis) and the delay time (upper axis). The solid line is the spectrum analyzer resolution bandwidth setting, the circles denote the resolution of the RDSHI, and the squares denote the measured linewidth of the EDFRL. DSHI, delayed self-heterodyne interferometer.

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