High performance fused-type mode-selective coupler using ellipticalcore two-mode fiber at 1550 nm |
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Authors: | Kwang Yong Song In Kag Hwang Seok Hyun Yun Byoung Yoon Kim |
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Affiliation: | Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Taejon; |
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Abstract: | In this letter, we demonstrate a high performance fused-type mode selective coupler that couples the LP11 mode in one fiber and the LP01 mode in another using highly elliptical core two-mode fibers. The phase-matching condition was achieved by etching and prepulling portions of two-mode fibers. The coupling efficiency and the mode extinction ratio of 56% to 80% and 22-32 dB, respectively, were achieved with high temperature stability over 1515- to 1595-nm wavelength range |
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