Er-Doped Optical Waveguide Amplifiers in X-Cut Lithium Niobate by Selective Codiffusion Academic Article

abstract

• Positive small-signal net gain is demonstrated for the first time in optical waveguide amplifiers in X-cut Y-propagating lithium niobate by selective erbium (Er) and titanium (Ti) codiffusion. First, a planar codiffused sample was prepared for dynamic secondary ion mass spectrometry (SIMS) analysis. An erbium diffusion coefficient of 0.17 m2/h was calculated from the SIMS results and from the diffusion theory. Furthermore, the fabrication of optical waveguide amplifiers and the characterization methods are described. In a 3.5-cm-long optical waveguide amplifier, an optical small-signal net gain of 1.4 dB at 1531 nm was measured for the transverse-magnetic mode by optical pumping at 1488 nm with a launched pump power of 90 mW. The codiffusion process shows good net gain efficiency (dB/mW) and an advantage for the fabrication of integrated optical passive and active functions in lithium niobate. 2006 IEEE.

authors

• Eknoyan, Ohannes
• Madsen, Christi

published proceedings

• IEEE PHOTONICS TECHNOLOGY LETTERS

author list (cited authors)

• Salas-Montiel, R., Solmaz, M. E., Eknoyan, O., & Madsen, C. K.

citation count

• 5

complete list of authors

• Salas-Montiel, Rafael||Solmaz, Mehmet E||Eknoyan, Ohannes||Madsen, Christi K

publication date

• March 2010

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Photonics Technology Letters  Journal

keywords

• Er Diffusion
• Er-doped Waveguide Amplifiers
• Lithium Niobate Waveguides
• Ti Codiffusion

Digital Object Identifier (DOI)

• 10.1109/LPT.2009.2039126

start page

• 362

end page

• 364

volume

• 22

issue

• 6

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Flpt.2009.2039126