DOI QR코드

DOI QR Code

Widely tunable thulium-doped fiber laser anchored on 50-GHz ITU-T grid in S/S+ band

S/S+band에서 넓은 파장가변 영역을 가지고 50-GHz ITU-T격자에 맞는 채널을 생성하는 thulium이 첨가된 광섬유 레이저

  • 안성준 (선문대학교 전자정보통신공학부) ;
  • 박철근 (선문대학교 전자정보통신공학부) ;
  • 안승준 (선문대학교 자연과학부 신소재과학부) ;
  • 박종한 (서울대학교 전기컴퓨터공학부) ;
  • 박남규 (서울대학교 전기컴퓨터공학부)
  • Published : 2004.02.01

Abstract

We demonstrate an S/S+band discretely tunable thulium doped fiber laser (TTDFL), anchored on a 50-㎓ ITU-T grid. Investigating the inversion analysis of the thulium doped fiber (TDF) in applying a dual wavelength (1.4 m and 1.5 m) pumping scheme, a laser whose tuning range covers most of the S/S+band has been obtained. Within the wide 3-㏈ bandwidth of 65.1 nm, the output power of the tunable laser exceeds 6.1 ㏈m with very flat spectral profile and the number of DWDM channels generated is as large as 178. If we increase the subsidiary pump power to 22 ㎽, the bandwidth is expanded up to 66.2 nm. By controlling the temperature of the fine grid filter, we have also shown that the frequency locking capability of the laser can be improved. The laser developed in this work is expected to be utilized as a practical optical source providing reference wavelengths in the S/S+band.

References

  1. Optical Fiber Communication Conference '2003 Comparison of Gain Characteristics of TmDoped Fiber Amplifier by Different Pumping Schemes T.Tamaoka
  2. Optical Fiber Communication Conference '2001 S-band fiber-optic amplifiers T.Sakamoto
  3. Journal of Selected Topics in Quantum Electronics v.8 no.3 Raman amplifiers for telecommunications M.N.Islam https://doi.org/10.1109/JSTQE.2002.1016358
  4. Optical Fiber Communication Conference '2003 A Discretely Tunable Erbium-Doped Fiber Ring Laser with 273 Ch. 50 GHz-Spacing ITU-T Grids in C- & L-band Regions H.Ryu;D.Lee;W.Lee;H.Moon;H.Suh
  5. Electronic Letters v.38 Gain-shifted TDFA employing high concentration doping technique with high internal power conversion efficiency of 70% S.Aozasa;H.Masuda;T.Sakamoto;K.Shikano;M.Shimizu https://doi.org/10.1049/el:20020264
  6. J. Opt. Soc. Korea v.7 no.2 Investigation of amplifying mechanism in an L-band EDFA pumped by a 980 nm pump H.H.Lee;J.M.Oh;B.J.Kim;D.Lee https://doi.org/10.3807/JOSK.2003.7.2.067
  7. Electronic Letters v.37 48% power conversion efficiency in single pump gain-shifted thulium-doped fiber amplifer F.Roy;F.Leplingard;L.Lorcy;A. Le Sauze;P.Baniel;D.Bayart https://doi.org/10.1049/el:20010672
  8. IEEE Photonics Technology Letters v.13 no.5 Laser-diode-pumped highly-efficient gain-shifted thulium-doped fiber amplifier operating in the 1480-1510-nm band T.Kasamatsu;Y.Yano;T.Ono https://doi.org/10.1109/68.920742
  9. Electronic Letters v.37 1480-1510 nm band Tm-doped fibre amplifier with high power conversion efficiency of 42% S.Aozasa;H.Masuda;H.Ono;T.Sakamoto;T.Kanamori;Y.Ohishi;M.Shimizu https://doi.org/10.1049/el:20010781
  10. IEEE Photonics Technology Letters v.14 no.11 Analysis on the Transient Response of 1.4m/1.5m Dual Wavelength Pumped Thulium Doped Fiber Amplifiers J.Byun;P.Kim;W.J.Lee;C.H.Lee;N.Park https://doi.org/10.1109/LPT.2002.803336
  11. IEEE Photonics Technology Letters v.14 no.9 Demonstration of highly efficient flat-gain L-band EDFAs by incorporating a fiber Bragg grating J.M.Oh;H.B.Choi;D.Lee;S.J.Ahn;S.J.Jung;S.B.Lee https://doi.org/10.1109/LPT.2002.801101
  12. Optical Fiber Communication Conference '2002 Gain excursion & tilt compensation algorithm for TDFA using 1.4 mm/1.5 mm Dual Wavelength pump control W.J.Lee;C.H.Lee;J.Byun;J.Park;N.Park