Abstract

Robust high-power, single frequency operation of semiconductor external cavity lasers is demonstrated in a novel extended two-level doped-fiber absorbing system. Outstanding wavelength and line-width stability is observed in long external cavities.

© 2003 Optical Society of America

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References

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  1. D. M. Bird, J. R. Armitage, R. Kashyap R. M. A. Fatah, and K. H.Cameron, �??Narrow line semiconductor laser using fibre grating,�?? Electron. Lett. 27, 115-116 (1991).
    [CrossRef]
  2. Timofeev F N, Bayvel P, Midwinter J E, Wyatt R, Kashyap R, Robertson M, �??2.6 Gbit/s dense WDM transmission in standard fibre using directly-modulated fibre grating lasers,�?? Electron. Lett. 33, 1632-3 (1997).
    [CrossRef]
  3. Kashyap R, Payne R A, Whitley T J and Sherlock G, �??Wavelength uncommitted lasers,�?? Electron. Lett. 30, 1065-1066 (1994).
    [CrossRef]
  4. Kostko I, Timofeev F N, Wyatt R, Kashyap R and Lealman I, �??Modulation bandwidth of high speed, directly modulated semiconductor laser with detuned external fibre grating reflector,�?? in Digest of Laser and Electro Optic Society �??2000, paper WF1, (Puerto Rico 2000), 434-435.
  5. Paoletti P, Meliga M, Oliveti G, Puleo M, Rossi G and Senepa L, �??10 Gbit/s ultra low chirp 1.55 m directly modulated hybrid fiber grating semiconductor laser source,�?? in Tech. Digest of ECOC�??97, 107-110 (1997).
  6. Loh W H, Laming R I and Zervas M N, �??Single frequency erbium fiber external cavity semiconductor laser,�?? Appl. Phys. Lett. 66, 3422-3424 (1995).
    [CrossRef]
  7. Ferrari, A., Ghislotti G., Balsamo S., Spano V., Trezzi F. �??Subkilohertz fluctuations and mode hopping in high-power grating-stabilized 980-nm pumps,�?? J. Lightwave Technol. 20, 515-518 (2002).
    [CrossRef]
  8. Kashyap R, Fiber Bragg gratings, (Academic Press 1999) p. 379.
  9. Fleming, S.C, Whitley, T.J, �??Measurement of pump induced refractive index change in erbium doped fibre amplifier,�?? Electron. Lett. 27, 1959 �??1961 (1991).
    [CrossRef]

Appl. Phys. Lett.

Loh W H, Laming R I and Zervas M N, �??Single frequency erbium fiber external cavity semiconductor laser,�?? Appl. Phys. Lett. 66, 3422-3424 (1995).
[CrossRef]

Electron. Lett.

Fleming, S.C, Whitley, T.J, �??Measurement of pump induced refractive index change in erbium doped fibre amplifier,�?? Electron. Lett. 27, 1959 �??1961 (1991).
[CrossRef]

D. M. Bird, J. R. Armitage, R. Kashyap R. M. A. Fatah, and K. H.Cameron, �??Narrow line semiconductor laser using fibre grating,�?? Electron. Lett. 27, 115-116 (1991).
[CrossRef]

Timofeev F N, Bayvel P, Midwinter J E, Wyatt R, Kashyap R, Robertson M, �??2.6 Gbit/s dense WDM transmission in standard fibre using directly-modulated fibre grating lasers,�?? Electron. Lett. 33, 1632-3 (1997).
[CrossRef]

Kashyap R, Payne R A, Whitley T J and Sherlock G, �??Wavelength uncommitted lasers,�?? Electron. Lett. 30, 1065-1066 (1994).
[CrossRef]

J. Lightwave Technol.

Other

Kashyap R, Fiber Bragg gratings, (Academic Press 1999) p. 379.

Kostko I, Timofeev F N, Wyatt R, Kashyap R and Lealman I, �??Modulation bandwidth of high speed, directly modulated semiconductor laser with detuned external fibre grating reflector,�?? in Digest of Laser and Electro Optic Society �??2000, paper WF1, (Puerto Rico 2000), 434-435.

Paoletti P, Meliga M, Oliveti G, Puleo M, Rossi G and Senepa L, �??10 Gbit/s ultra low chirp 1.55 m directly modulated hybrid fiber grating semiconductor laser source,�?? in Tech. Digest of ECOC�??97, 107-110 (1997).

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Figures (6)

Fig. 1.
Fig. 1.

SDL2 Laser spectra vs. drive current.

Fig. 2.
Fig. 2.

The spectrum of SDL2 laser in the coherence collapse regime at different drive currents.

Fig. 3.
Fig. 3.

SDL-2 spectra as a function of drive current with the Yb:doped fiber as an intra-cavity element. The inset shows the cavity design.

Fig. 4.
Fig. 4.

L–I characteristics of SDL-2 with the cavity configuration shown in Fig. 3 (□), and for SDL-1 (Δ).

Fig. 5.
Fig. 5.

SDL-2 wavelength vs. drive current, showing excellent stability (measurement resolution is 0.8pm).

Fig. 6.
Fig. 6.

Long term operating wavelength stability of SDL2 external resonator laser measured with a wavelength meter.

Tables (1)

Tables Icon

Table 1: Summary data on lasers with an external cavity used in experiments

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