Optical amplification characteristics of Ti-diffused waveguides on Erbium-doped LiNbO3 crystal

So Kogahara; Satoshi Shinada; Shinya Nakajima; Tetsuya Kawanishi; Hirochika Nakajima; Masayuki Izutsu

doi:10.1587/elex.4.134

LETTER

Optical amplification characteristics of Ti-diffused waveguides on Erbium-doped LiNbO₃ crystal

So Kogahara, Satoshi Shinada, Shinya Nakajima, Tetsuya Kawanishi, Hirochika Nakajima, Masayuki Izutsu

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Keywords: LiNbO₃, Optical amplifier, Er, Ti-diffusion, loss compensated waveguide

JOURNAL FREE ACCESS

2007 Volume 4 Issue 4 Pages 134-139

DOI https://doi.org/10.1587/elex.4.134

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Abstract

We have first fabricated and characterized Ti-diffused channel waveguides on Er-doped LiNbO₃ single crystal. We achieved an optical gain of 2.1dB/cm at 1531.4nm signal light (TM mode) by optical pumping at 1480nm with pump power of 200mW/port for a 40mm long Ti-diffused Z-cut 0.5mol% Er-doped LiNbO₃ waveguide. The total gain of a pig tailed device was 3.8dB.

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