Progress In Electromagnetics Research B
ISSN: 1937-6472
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 14 > pp. 431-448


By S. D. Emami, S. W. Harun, F. Abd-Rahman, H. A. Abdul-Rashid, S. A. Daud, and H. Ahmad

Full Article PDF (630 KB)

The pump power and thulium-doped fiber (TDF) length for both single-pass and double-pass Thulium-Doped Fiber Amplifiers (TDFA) are theoretically optimized by solving differential equations. The 1050 nm pump is used to provide both ground-state and excitedstate absorptions for amplification in the S-band region. The TDFA is saturated at a shorter length with a higher gain value as the operating pump power increases. The double-pass TDFA allows double propagation of the test signal in the gain medium, which increases the effective TDF length and thus improves the gain of the TDFA compared to the single-pass configuration. Therefore, a small signal gain improvement of approximately 15 dB is obtained in the 1465 nm region. However, a noise figure penalty of approximately 1 dB is also obtained in this wavelength region. The theoretical result is in agreement with the experimental result.

S. D. Emami, S. W. Harun, F. Abd-Rahman, H. A. Abdul-Rashid, S. A. Daud, and H. Ahmad, "Optimization of the 1050nm Pump Power and Fiber Length in Single-Pass and Double-Pass Thulium Doped Fiber Amplifiers," Progress In Electromagnetics Research B, Vol. 14, 431-448, 2009.

1. Caspary, R., U. B. Unrau, and W. Kowalsky, Recent progress on S-band fiber amplifiers, Proceedings of 5th International Conference on Transparent Optical Networks, Vol. 1, 236-242, 2003.

2. Sakamoto, T., S-band fiber optic amplifiers, Vol. 2, TuQ1-1-TuQ1-4, Conference and Exhibit on Optical Fiber Communication, OFC, 2001.

3. Kozak, M. M., R. Caspary, and W. Kowalsky, Thuliumdoped fiber amplifier for the S-band, Proceedings of 2004 6th International Conference on Transparent Optical Networks, 2004, Vol. 6, 51-54, 2004.

4. Yam, S. S. H. and J. Kim, "Ground state absorption in thuliumdoped fiber amplifier: experiment and modeling," IEEE Journal of Selected Topics in Quantum Electronics, Vol. 12, No. 4, 797-803, 2006.

5. Peterka, P., B. Faure, W. Blance, and M. Karasek, "Theoretical modeling of S-band thulium doped silica fiber amplifiers," Optical and Quantum Electronics, Vol. 36, 201-212, 2004.

6. Kasamatu, T., Y. Yano, and T. Ono, "1.49 μm band gain-shifted thulium doped fiber amplifier for WDM transmission system," Journal of Lightwave Technol., Vol. 20, No. 10, 1862-1838, 1998.

7. Lee, W. J., B. Min, J. Park, and N. Park, Study on the pumping wavelength dependency of S/S+-band fluoride based thuliumdoped fiber amplifiers, Optical Fiber Communication Conference and Exhibit, OFC 2001, Vol. 36, TuQ5-1-TuQ5-4, 2004.

8. Desurvire, E., Erbium-Doped Fiber Amplifiers: Principles and Applications, John Wiley & Sons, New York, 1994.

9. Michael, J. and F. Digonnet, "Rare-earth-doped Fiber Lasers and Amplifiers," CRC Press, 2001.

10. Harun, S. W., N. K. Saat, and H. Ahmad, "An efficient S-band erbium-doped fiber amplifier using double-pass configuration ," IEICE Electronics Express, Vol. 2, No. 6, 182-185, 2005.

11. Karasek, M., "Optimum design of Er3+/Yb3+ co-doped fibers for large signal high-pump-power applications," IEEE Journal of Quantum Electronics, Vol. 33, No. 10, 1699-1705, 1997.

12. Allen, R., L. Esterowitz, and I. Aggarwal, "An efficient 1.46 μm thulium fiber laser via a cascade process," IEEE Journal of Quantum Electronics, Vol. 29, No. 2, 303-306, 1993.

13. Eichhorn, M., "Numerical modeling of Tm-doped double-clad fluoride fiber amplifiers," IEEE Journal of Quantum Electronics, Vol. 41, No. 12, 1574-1581, 2005.

14. Bastos-Filho, C. J. A., J. F. Martins-Filho, and A. S. L. Gomes, "38 dB gain from double-pass single-pump thulium doped fiber amplifier ," IEEE Microwave and Optoelectronics Conference, Vol. 1, 125-128, 2003.

© Copyright 2010 EMW Publishing. All Rights Reserved