Optical interconnection between different spatial modes using double phase conjugate mirror with polarization alignment system |
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| Authors: | Yuta Wakayama Atsushi Okamoto Alexander A Grabar and Kunihiro Sato |
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| Institution: | (1) Central Research and Technology, Carl Zeiss AG, Carl-Zeiss-Promenade 10, 07745 Jena, Germany;(2) Central Research and Technology, Carl Zeiss AG, Carl Zeiss Promenade 10, 07745 Jena, Germany;(3) Research and Development, Management, GRINTECH GmbH, Schillerstr. 1, 07745 Jena, Germany;(4) Corporate Research and Technology Microstructured Optics Research, Carl Zeiss AG, Carl-Zeiss-Promenade 10, 07745 Jena, Germany;(5) Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn, Germany;(6) Department of Photonics, Chitose Institute of Science and Technology, 758-65 Bibi, 066-8655 Chitose, Japan;(7) Center for Frontier Science Photonic Crystals, Chiba University, 1-33 Yayoi, 263-8522 Chiba, Japan;(8) Physics Department, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India;(9) Physics Department, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India |
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| Abstract: | We propose a fundamental interconnection method using a polarization alignment system for waveguides having different spatial
modes. In addition, as an example for the verification of the fundamental operation, we demonstrate an interconnection between
a photonic crystal fiber and a laser that have obviously different spatial modes. The polarization alignment system operates
synergistically with a self-written waveguide formed with a double phaseconjugate mirror. This technique enables us to interconnect
a photonic crystal fiber with a laser source without complicated and time-consuming optical alignment. In this method, although
it is not necessary to perform an external control for interconnection, the waveguide most suitable for connection is formed
autonomously in a Sn2P2S6:Sb crystal developed for this purpose. There was a marked reduction in the polarization dependence of coupling efficiency,
compared with that observed using a stand-alone double phase-conjugate mirror. |
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