Abstract

An optical waveguide amplifier fabricated on erbium-ytterbium-doped phosphate glass by direct femtosecond laser writing is demonstrated. The waveguides are manufactured using 1040-nm radiation from a diode-pumped cavity-dumped Yb:KYW oscillator, operating at a 885 kHz repetition rate, with a 350 fs pulse duration. Peak internal gain of 9.2 dB is obtained at 1535 nm, with a minimum internal gain of 5.2 dB at 1565 nm. Relatively low insertion losses of 1.9 dB enable for the first time an appreciable net gain in the full C-band of optical communications.

© 2005 Optical Society of America

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Appl. Phys. A (1)

S. Nolte, M. Will, J. Burghoff, A. Tuennermann, �??Femtosecond waveguide writing: a new avenue to three-dimensional integrated optics,�?? Appl. Phys. A 77, 109-111 (2003).
[CrossRef]

Appl. Phys. Lett. (1)

A. Lidgard, J.R. Simpson, and P.C. Becker, �??Output saturation characteristics of erbium-doped fiber amplifiers pumped at 975 nm,�?? Appl. Phys. Lett. 56, 2607-2609 (1990).
[CrossRef]

Electron. Lett. (2)

R. Osellame, V. Maselli, N. Chiodo, D. Polli, R. Martinez Vazquez, R. Ramponi, and G. Cerullo, �??Fabrication of 3D photonic devices at 1.55 µm wavelength by femtosecond Ti:Sapphire oscillator,�?? Electron. Lett. 41, 315-317 (2005).
[CrossRef]

Y. Sikorski, A. A. Said, P. Bado, R. Maynard, C. Florea, and K. A. Winick, �??Optical waveguide amplifier in Nd-doped glass written with near-IR femtosecond laser pulses,�?? Electron. Lett. 36, 226-227 (2000).
[CrossRef]

J. Lightwave Technol. (2)

J. Opt. Soc. Am. B (1)

OFC 2001 (2)

C.M. McIntosh, J.-M.P. Delavaux, G.C. Wilson, C. Hullin, B. Neyret, J. Philipsen, C. Cassagnettes, D. Barbier, �??High output power erbium doped waveguide amplifier for QAM distribution,�?? in Proceedings of OSA Optical Fiber Communications Conference (OFC 2001), pp. WDD5-1 �?? WDD5-3 vol.3.

M.R. Lange, E. Bryant, M.J. Myers, J.D. Myers, R. Wu, and C.R. Hardy, �??High Gain Short Length Phosphate Glass Erbium-Doped Fiber Amplifier Material,�?? in Proceedings of OSA Optical Fiber Communications Conference (OFC 2001), pp. WDD22-1 �?? WDD22-3 vol.3.

Opt. Express (1)

Opt. Lett. (9)

A. Killi, A. Steinmann, J. Dorring, U. Morgner, M.J. Lederer, D. Kopf, and C. Fallnich, �??High-peak-power pulses from a cavity-dumped Yb:KY(WO4)2 oscillator,�?? Opt. Lett. 30, 1811-1813 (2005).

A. Killi, U. Morgner, M. J. Lederer, and D. Kopf, �??Diode-pumped femtosecond laser oscillator with cavity dumping,�?? Opt. Lett. 29, 1288-1290 (2004).
[CrossRef]

R. Osellame, N. Chiodo, G. Della Valle, S. Taccheo, R. Ramponi, G. Cerullo, A. Killi, U. Morgner, M. Lederer, and D. Kopf, �??Optical waveguide writing with a diode-pumped femtosecond oscillator,�?? Opt. Lett. 29, 1900-1902 (2004).
[CrossRef]

S. Taccheo, G. Della Valle, R. Osellame, G. Cerullo, N. Chiodo, P. Laporta, O. Svelto, A. Killi, U. Morgner, M. Lederer, and D. Kopf, �??Er:Yb-doped waveguide laser fabricated by femtosecond laser pulses,�?? Opt. Lett. 29, 2626-2628 (2004).
[CrossRef]

K. M. Davis, K. Miura, N. Sugimoto, and K. Hirao, �??Writing waveguides in glass with a femtosecond laser,�?? Opt. Lett. 21, 1729-1731 (1996).

A.M. Streltsov and N.F. Borrelli, �??Fabrication and analysis of a directional coupler written in glass by nanojoule femtosecond laser pulses,�?? Opt. Lett. 26, 42-43 (2001).

C.B. Schaffer, A. Brodeur, J.F. Garcia, and E. Mazur, �??Micromachining bulk glass by use of femtosecond laser pulses with nanojoule energy,�?? Opt. Lett. 26, 93-95 (2001).

K. Minoshima, A.M. Kowalevicz, I. Hartl, E.P. Ippen, and J.G. Fujimoto, �??Photonic device fabrication in glass by use of nonlinear materials processing with a femtosecond laser oscillator,�?? Opt. Lett. 26, 1516-1518 (2001).

J.W. Chan, T. Huser, S. Risbud, and D.M. Krol, �??Structural changes in fused silica after exposure to focused femtosecond laser pulses,�?? Opt. Lett. 26, 1726-1728 (2001).

Other (1)

P.C. Becker, N.A. Olsson, and J.R. Simpson, Erbium Doped Fiber Amplifiers: Fundamentals and Technology, (Academic Press, San Diego, Calif., 1999).

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