A semi-weakly confined erbium-doped waveguide amplifier with double-layered buffer/cladding

A semi-weakly confined waveguide structure was designed and fabricated. This waveguide structure has a 350 nm thin core layer. Its optical mode field is weakly confined in vertical direction but is strongly confined laterally. The waveguide can support a nearly circular optical field distribution th...

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Bibliographic Details
Published inOptics express Vol. 16; no. 13; pp. 9844 - 9849
Main Authors Tang, Hengsheng, Li, Yigang, Zhang, Yanwu, Li, Yingfeng, Li, Hao, Tu, Xin, Wu, Xiang, Liu, Liying, Xu, Lei
Format Journal Article
LanguageEnglish
Published United States 23.06.2008
Subjects
Amplifiers, Electronic
Computer Simulation
Equipment Design
Equipment Failure Analysis
Lasers, Solid-State
Light
Miniaturization
Models, Theoretical
Optics and Photonics - instrumentation
Scattering, Radiation
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Summary:A semi-weakly confined waveguide structure was designed and fabricated. This waveguide structure has a 350 nm thin core layer. Its optical mode field is weakly confined in vertical direction but is strongly confined laterally. The waveguide can support a nearly circular optical field distribution that matches well with a single-mode fiber. An erbium-doped waveguide amplifier (EDWA) with the new waveguide structure was fabricated by sol-gel method. The EDWA has a passive core and double-layered buffer/cladding. A small coupling loss of 0.4 dB/facet and an internal gain of 1.9 dB via evanescent wave amplification near 1550 nm were obtained.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.16.009844