Abstract
For all-fiber setups like two-tone single frequency amplifiers [1, 2], amplifiers with auxiliary seed signals [3] or high power core-pumped amplifiers, single-mode fiber components for wavelength multiplexing are essential. The main drawback of most commercially available fused single-mode fiber couplers is that the power handling is specified only up to a few Watts [1]. In this contribution we present an in house-developed fused single mode wavelength division multiplexer (WDM) capable of multiplexing two wavelengths up to a power of 26 W without, and 16 W with integrating it in a core-pumped fiber amplifier. For the development of the high power WDM we used fiber with a core diameter of 10 µm and a numerical aperture of 0.075. The insertion loss and the isolation of the WDM were < 0.3 dB and > 17 dB. To verify the maximum power handling of the developed high power WDM in an amplifier setup, we integrated it in an all-fiber core pumped amplifier (Fig 1). The pump laser system consisted of a seed diode delivering an average power of 200 mW at a wavelength of 1025 nm, a pump combiner (6+1x1) and an Ytterbium doped double clad fiber. It delivered a maximum output power of 26 W at a wavelength of 1025 nm. The amplifier setup consisted of a seed diode with an output power of 150 mW at a wavelength of 1066 nm, two high power WDMs and a core-pumped ytterbium doped double-clad fiber with a core diameter of 10 µm (Fig. 1). A first WDM multiplexed the pump (1025nm) and the signal (1066nm) wavelength, while a second WDM served as pump and signal demultiplexer after signal amplification.
© 2011 Optical Society of America
PDF ArticleMore Like This
Christoph Ottenhues, Thomas Theeg, Katharina Hausmann, Hakan Sayinc, Jörg Neumann, and Dietmar Kracht
CJ_P_42 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2015
Thomas Theeg, Maik Frede, Hakan Sayinc, Jörg Neumann, and Dietmar Kracht
OMH6 Optical Fiber Communication Conference (OFC) 2011
Fabian Stutzki, Florian Jansen, Tino Eidam, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann
AMB11 Advanced Solid-State Photonics (ASSL) 2011