Abstract

For the first time to the authors’ knowledge, we have demonstrated how thermally controlled overcoupled fused fiber couplers and fiber loop mirrors based on these couplers can be used as broadband tuning elements in a fiber laser cavity. No bulk optical elements play any role in this technique. Temperature tuning the coupler results in a shift in the coupling ratio or in the effective output coupler transmission. For a fixed pump source, and for a given laser cavity, this shift causes the lasing wavelength to shift. We have continuously tuned an Er silica fiber laser in this manner over the range of 1527–1570 nm in a ring configuration, and, using a fiber loop mirror with these couplers in a linear Tm silica fiber laser cavity, we have achieved more than 50-nm broadband tuning over the range of 1850–1910 nm. The tuning range and the sensitivity to temperature depend on the degree of overcoupling of the loop mirror coupler.

© 1998 Optical Society of America

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References

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  1. M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
    [CrossRef]
  2. G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
    [CrossRef]
  3. N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
    [CrossRef]
  4. H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
    [CrossRef]
  5. J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
    [CrossRef]
  6. G. A. Ball, W. W. Morey, “Continuously tunable single-mode Er fiber laser,” Opt. Lett. 2, 420–422 (1992).
    [CrossRef]
  7. P. D. Humphrey, J. E. Bowers, “Fiber-birefringence tuning technique for an Er-doped fiber ring laser,” IEEE Photon. Technol. Lett. 5, 32–34 (1993).
    [CrossRef]
  8. D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
    [CrossRef]
  9. W. L. Barnes, J. E. Townsend, “Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers,” Electron. Lett. 26, 746–747 (1990).
    [CrossRef]
  10. L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
    [CrossRef]
  11. K. W. Oh, Q. Zhang, A. Kilian, L. Reinhart, P. Weber, T. F. Morse, “Broadband superflorescent emission of the 3H4 ⇒ 3H6 transition in a Tm-doped multicomponent silicate fiber,” Opt. Lett. 19, 278–280 (1994).
    [CrossRef] [PubMed]
  12. Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
    [CrossRef]
  13. P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
    [CrossRef]

1995 (2)

L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
[CrossRef]

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

1994 (1)

1993 (1)

P. D. Humphrey, J. E. Bowers, “Fiber-birefringence tuning technique for an Er-doped fiber ring laser,” IEEE Photon. Technol. Lett. 5, 32–34 (1993).
[CrossRef]

1992 (1)

G. A. Ball, W. W. Morey, “Continuously tunable single-mode Er fiber laser,” Opt. Lett. 2, 420–422 (1992).
[CrossRef]

1991 (4)

G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
[CrossRef]

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
[CrossRef]

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

1990 (3)

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

W. L. Barnes, J. E. Townsend, “Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers,” Electron. Lett. 26, 746–747 (1990).
[CrossRef]

1989 (1)

P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
[CrossRef]

Ball, G. A.

G. A. Ball, W. W. Morey, “Continuously tunable single-mode Er fiber laser,” Opt. Lett. 2, 420–422 (1992).
[CrossRef]

Barnes, W. L.

W. L. Barnes, J. E. Townsend, “Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers,” Electron. Lett. 26, 746–747 (1990).
[CrossRef]

Bowers, J. E.

P. D. Humphrey, J. E. Bowers, “Fiber-birefringence tuning technique for an Er-doped fiber ring laser,” IEEE Photon. Technol. Lett. 5, 32–34 (1993).
[CrossRef]

Brown, D. A.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

Cowle, G. J.

G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
[CrossRef]

Dawson, J. W.

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

Digiovanni, D. J.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Hanna, D. C.

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

Harvey, G. T.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Haus, H. A.

L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
[CrossRef]

Humphrey, P. D.

P. D. Humphrey, J. E. Bowers, “Fiber-birefringence tuning technique for an Er-doped fiber ring laser,” IEEE Photon. Technol. Lett. 5, 32–34 (1993).
[CrossRef]

Ippen, E. P.

L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
[CrossRef]

Jopson, R. M.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Kilian, A.

Koren, U.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Kung, H.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

Lin, C.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Maeda, M. W.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Maton, P. D.

P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
[CrossRef]

Miller, C.

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

Morey, W. W.

G. A. Ball, W. W. Morey, “Continuously tunable single-mode Er fiber laser,” Opt. Lett. 2, 420–422 (1992).
[CrossRef]

Morse, T. F.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

K. W. Oh, Q. Zhang, A. Kilian, L. Reinhart, P. Weber, T. F. Morse, “Broadband superflorescent emission of the 3H4 ⇒ 3H6 transition in a Tm-doped multicomponent silicate fiber,” Opt. Lett. 19, 278–280 (1994).
[CrossRef] [PubMed]

Nelson, L. E.

L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
[CrossRef]

Oh, K. W.

Park, N.

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

Patel, J. S.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Payne, D. N.

G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
[CrossRef]

Percival, R. M.

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

Pfeiffer, T. H.

H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
[CrossRef]

Piccirilli, A.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Presby, H. M.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Reid, D.

G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
[CrossRef]

Reinhart, L.

Reinhart, L. J.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

Saifi, M. A.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Schmuck, H.

H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
[CrossRef]

Scrivener, P. L.

P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
[CrossRef]

Smart, R. G.

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

Smith, D. A.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Stone, J.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Stulz, L. W.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Sulhoff, J. W.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Sun, Y.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Tarbox, E. J.

P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
[CrossRef]

Townsend, J.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

Townsend, J. E.

W. L. Barnes, J. E. Townsend, “Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers,” Electron. Lett. 26, 746–747 (1990).
[CrossRef]

Tropper, A. C.

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

Vahala, K. J.

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

Veith, G.

H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
[CrossRef]

Von Lehman, A.

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

Weber, P.

Zhang, Q.

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

K. W. Oh, Q. Zhang, A. Kilian, L. Reinhart, P. Weber, T. F. Morse, “Broadband superflorescent emission of the 3H4 ⇒ 3H6 transition in a Tm-doped multicomponent silicate fiber,” Opt. Lett. 19, 278–280 (1994).
[CrossRef] [PubMed]

Zyskind, J. L.

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

Appl. Phys. Lett. (2)

N. Park, J. W. Dawson, K. J. Vahala, C. Miller, “All-fiber, low-threshold, widely tunable single-frequency, Er-doped fiber ring laser with a tandem fiber Fabry–Perot filter,” Appl. Phys. Lett. 59, 2369–2371 (1991).
[CrossRef]

L. E. Nelson, E. P. Ippen, H. A. Haus, “Broadly tunable sub-500 fs pulses from an additive-pulse mode-locked thulium doped fiber ring laser,” Appl. Phys. Lett. 67, 19–21 (1995).
[CrossRef]

Electron. Lett. (6)

Q. Zhang, D. A. Brown, H. Kung, J. Townsend, L. J. Reinhart, T. F. Morse, “Use of highly over-coupled couplers to detect shifts in Bragg wavelength,” Electron. Lett. 31, 480–481 (1995).
[CrossRef]

P. L. Scrivener, E. J. Tarbox, P. D. Maton, “Narrow linewidth tunable operation of Er3+-doped single-mode fiber laser,” Electron. Lett. 25, 549–550 (1989).
[CrossRef]

W. L. Barnes, J. E. Townsend, “Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers,” Electron. Lett. 26, 746–747 (1990).
[CrossRef]

H. Schmuck, T. H. Pfeiffer, G. Veith, “Widely tunable narrow linewidth Er doped fiber ring laser,” Electron. Lett. 27, 2117–2119 (1991).
[CrossRef]

J. L. Zyskind, J. W. Sulhoff, Y. Sun, J. Stone, L. W. Stulz, G. T. Harvey, D. J. Digiovanni, H. M. Presby, A. Piccirilli, U. Koren, R. M. Jopson, “Singlemode diode-pumped tunable Er-doped fiber laser with linewidth less than 5.5 kHz,” Electron. Lett. 27, 2148–2150 (1991).
[CrossRef]

G. J. Cowle, D. N. Payne, D. Reid, “Single-frequency traveling-wave Er-doped fiber loop laser,” Electron. Lett. 27, 229–230 (1991).
[CrossRef]

IEEE Photon. Technol. Lett. (2)

M. W. Maeda, J. S. Patel, D. A. Smith, C. Lin, M. A. Saifi, A. Von Lehman, “An electronically tunable fiber laser with a liquid-crystal etalon fiber as the wavelength-tuning element,” IEEE Photon. Technol. Lett. 2, 787–789 (1990).
[CrossRef]

P. D. Humphrey, J. E. Bowers, “Fiber-birefringence tuning technique for an Er-doped fiber ring laser,” IEEE Photon. Technol. Lett. 5, 32–34 (1993).
[CrossRef]

Opt. Commun. (1)

D. C. Hanna, R. M. Percival, R. G. Smart, A. C. Tropper, “Efficient and tunable operation of a Tm-doped fiber laser,” Opt. Commun. 75, 283–286 (1990).
[CrossRef]

Opt. Lett. (2)

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Figures (6)

Fig. 1
Fig. 1

Experimental setup of an Er ring laser with a HOCC as the output mirror. Abbreviations are defined in text.

Fig. 2
Fig. 2

Model of the HOCC as an output mirror in a fiber ring laser. (a) HOCC transmission spectra for two different temperatures, where the tuning range of the fiber laser ranges from λ1 to λ2. (b) Two-peak lasing regime for a HOCC with more cycles than in (a).

Fig. 3
Fig. 3

HOCC transmission spectra for a coupler with 25 cycles (1, 16 °C; 2, 31 °C) and for a coupler with 60 cycles (3, 18.5 °C; 4, 33.4 °C).

Fig. 4
Fig. 4

Lasing spectra for (a) a 25-cycle HOCC and for (b) a 60-cycle HOCC.

Fig. 5
Fig. 5

Experimental setup of a Tm-fiber laser with output loop mirror: PC, polarization controller.

Fig. 6
Fig. 6

Lasing wavelength dependence on the temperature of the loop mirror fused coupler (a) for a short (32-mm) coupler elongation length and (b) for a long (37-mm) one.

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