Abstract

We report the first experimental breakthrough of a net gain of optical signals in a broadband chromium-doped fiber amplifier (CDFA) for next-generation optical communication systems. Current fiber amplifiers, including commercial erbium-doped fiber amplifier, cover only a relatively small portion of the entire transmission bandwidths (1300–1600 nm) of the low-loss windows of silica fibers. The newly developed CDFAs have opened up the possibility of utilizing the 300-nm entire spectrum of the low-loss fibers to further increase the transmission capacity. In this paper, we present the experimental demonstration of a net gain of 1.2 dB employing gain enhancement technique. With the help of an optical-fiber system examination for the CDFA, a 40-Gb/s error-floor free data transmission was successfully demonstrated by realizing the high-speed transmission of signal with gain through the chromium-doped fibers (CDFs). Further gain improvement in the CDFAs employing few-mode or single-mode CDFs will be presented and discussed.

© 2012 IEEE

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2011 (1)

2010 (1)

Y. C. Huang, J. S. Wang, Y. S. Lin, T. C. Lin, W. L. Wang, Y. K. Lu, S. M. Yeh, H. H. Kuo, S. L. Huang, W. H. Cheng, "Development of broadband single-mode Cr-doped silica fibers," IEEE Photon. Technol. Lett. 22, 914-916 (2010).

2009 (1)

S. M. Yeh, J. Y. Feng, K. Y. Huang, W. Zhuo, Y. C. Huang, T. S. Lay, S. L. Huang, P. Yeh, W. H. Cheng, "Coupling characteristics for ultra-broadband Cr-doped multimode fibers," J. Lightw. Technol. 27, 2834-2842 (2009).

2008 (3)

K. Y. Huang, K. Y. Hsu, D. Y. Jheng, W. J. Zhuo, P. Y. Chen, P. S. Yeh, S. L. Huang, "Adiabatic wave propagation in Cr:YAG double-clad crystal fiber fabricated by sapphire tube assisted CDLHPG technique," Opt. Expr. 16, 12264-12271 (2008).

S. M. Yeh, J. Y. Feng, Y. C. Huang, T. S. Lay, S. L. Huang, P. Yeh, W. H. Cheng, "Mode matching and insertion loss in ultra-broadband Cr-doped multimode fibers," Opt. Lett. 33, 785-787 (2008).

K. Y. Huang, K. Y. Hsu, S. L. Huang, "Analysis of ultra-broadband amplified spontaneous emissions generated by Cr$^{4 +}$:YAG single and glass-clad crystal fibers," J. Lightw. Technol. 26, 1632-1639 (2008).

2007 (1)

J. C. Chen, Y. S. Lin, C. N. Tsai, K. Y. Huang, C. C. Lai, W. Z. Su, R. C. Shr, F. J. Kao, T. Y. Chang, S. L. Huang, "400-nm-bandwidth emission from a Cr-doped glass fiber," Photon. Technol. Lett. 19, 595-597 (2007).

2006 (1)

Y. C. Huang, Y. K. Lu, J. C. Chen, Y. C. Hsu, Y. M. Huang, S. L. Huang, W. H. Cheng, "Broadband emission from Cr-doped fibers fabricated by drawing tower," Opt. Expr. 14, 8492-8497 (2006).

2005 (1)

2003 (2)

R. Feldman, Y. Shimony, Z. Burshtein, "Dynamics of chromium ion valence transformations in Cr, Ca:YAG crystals used as laser gain and passive Q-switching media," Opt. Mater. 24, 333-344 (2003).

H. S. Kim, S. K. Kim, B. Y. Kim, "Longitudinal mode control in few-mode erbium-doped fiber laser," Opt. Lett. 21, 1144-1146 (2003).

1999 (1)

1991 (1)

IEEE Photon. Technol. Lett. (1)

Y. C. Huang, J. S. Wang, Y. S. Lin, T. C. Lin, W. L. Wang, Y. K. Lu, S. M. Yeh, H. H. Kuo, S. L. Huang, W. H. Cheng, "Development of broadband single-mode Cr-doped silica fibers," IEEE Photon. Technol. Lett. 22, 914-916 (2010).

J. Lightw. Technol. (2)

K. Y. Huang, K. Y. Hsu, S. L. Huang, "Analysis of ultra-broadband amplified spontaneous emissions generated by Cr$^{4 +}$:YAG single and glass-clad crystal fibers," J. Lightw. Technol. 26, 1632-1639 (2008).

S. M. Yeh, J. Y. Feng, K. Y. Huang, W. Zhuo, Y. C. Huang, T. S. Lay, S. L. Huang, P. Yeh, W. H. Cheng, "Coupling characteristics for ultra-broadband Cr-doped multimode fibers," J. Lightw. Technol. 27, 2834-2842 (2009).

Opt. Expr. (2)

K. Y. Huang, K. Y. Hsu, D. Y. Jheng, W. J. Zhuo, P. Y. Chen, P. S. Yeh, S. L. Huang, "Adiabatic wave propagation in Cr:YAG double-clad crystal fiber fabricated by sapphire tube assisted CDLHPG technique," Opt. Expr. 16, 12264-12271 (2008).

Y. C. Huang, Y. K. Lu, J. C. Chen, Y. C. Hsu, Y. M. Huang, S. L. Huang, W. H. Cheng, "Broadband emission from Cr-doped fibers fabricated by drawing tower," Opt. Expr. 14, 8492-8497 (2006).

Opt. Lett. (6)

Opt. Mater. (1)

R. Feldman, Y. Shimony, Z. Burshtein, "Dynamics of chromium ion valence transformations in Cr, Ca:YAG crystals used as laser gain and passive Q-switching media," Opt. Mater. 24, 333-344 (2003).

Photon. Technol. Lett. (1)

J. C. Chen, Y. S. Lin, C. N. Tsai, K. Y. Huang, C. C. Lai, W. Z. Su, R. C. Shr, F. J. Kao, T. Y. Chang, S. L. Huang, "400-nm-bandwidth emission from a Cr-doped glass fiber," Photon. Technol. Lett. 19, 595-597 (2007).

Other (4)

G. Keiser, Optical Fiber Communications (McGraw-Hill, 2011).

W. L. Wang, J. S. Wang, Y. C. Huang, H. H. Kuo, S. L. Huang, W. H. Cheng, "Few-mode Cr-doped double-clad crystalline fibers," Optical Fiber Communication Conf. (OFC) Los AngelesCA (2011) OWS2.

A. Bjarklev, Optical Fiber Amplifiers: Design and System Applications (Artech House, 1993).

Y. C. Huang, J. S. Wang, K. M. Chu, T. C. Lin, W. L. Wang, T. L. Chou, S. M. Yeh, S. L. Huang, W. H. Cheng, "Fabrication and characteristics of Cr-doped fibers employing powder-in-tube technique," Optical Fiber Communication Conf. (OFC) Los AngelesCA (2011) OWS1.

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