Proposal of a small self-holding 2×2 optical switch using phase-change material

IEICE Electronics Express

Toshiharu Saiki¹  Yuichiro Ikuma¹  Hiroyuki Tsuda¹ 

[1] Graduate School of Science and Technology, Keio University

关键词: optical switch;    phase change material;    optical waveguide;   

DOI  :  10.1587/elex.5.442

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)Cited-By(7)A small and fast self-holding 2 × 2 optical switch using phase change material is proposed. This switch is based on a directional coupler in which a short waveguide made of a phase-change material (PCM) is sandwiched between two Si waveguides. The characteristics of the proposed switch were simulated by a beam propagation method (BPM). This switch can be as small as 3µm × 21µm because the change in the refractive index of PCMs between the crystalline and amorphous states is very large; in addition, by utilizing the self-holding characteristics, it has the potential for low power consumption. The loss and the crosstalk were calculated to be 2.5dB and -20.4dB in the bar state and 1.3dB and -14.3dB in the cross state, respectively.

【 授权许可】

Unknown