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Er/sup 3+/-Yb/sup 3+/ codoped phosphate glass waveguide amplifier using Ag/sup +/-Li/sup +/ ion exchange

2002; Institute of Electrical and Electronics Engineers; Volume: 14; Issue: 1 Linguagem: Inglês

10.1109/68.974168

1941-0174

Sze-Ho Wong, Edwin Yue‐Bun Pun, Philip Chung,

Photorefractive and Nonlinear Optics

An Er/sup 3+/-Yb/sup 3+/ codoped phosphate glass waveguide amplifier using an Ag/sup +/-Li/sup +/ ion exchange process is demonstrated. The glass contains Li/sup +/ instead of Na/sup +/ and the spectroscopic properties were characterized. The emission parameters were calculated, and the radiative quantum efficiency of the 4 I/sub 13/2/ to 4 I/sub 15/2/ transition is estimated to be /spl sim/100 %. The planar glass waveguide amplifier produces a net gain /spl sim/3.3 dB/cm with an input signal wavelength of 1.535 μm at a power of -40 dBm, for 120 mW of 980-nm pump power.