Three-mode multiplexer and demultiplexer utilizing trident and multimode couplers

OPTICS COMMUNICATIONS

卷:435

Article

Cao Dung Truong¹  Tan Hung Nguyen²  Quang Thai Pham³  Minh Tuan Trinh^4,5,6  Khu Vu⁷ 

[1] Posts & Telecommun Inst Technol, Hanoi, Vietnam

[2] Univ Danang, Univ Sci & Technol, Danang, Vietnam

[3] Ho Chi Minh City Univ Technol, Ho Chi Minh, Vietnam

[4] Ton Duc Thang Univ, Adv Funct Mat Energy & Environm Applicat Res Grp, Ho Chi Minh City, Vietnam

[5] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City, Vietnam

[6] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

[7] Australian Natl Univ, Canberra, ACT, Australia

关键词: Mode-division multiplexing;    Mode conversion;    Silicon photonics;    Multimode interference coupler;    Y-junction coupler;    Planar lightwave circuits;   

DOI  :  10.1016/j.optcom.2018.11.003

来源: Elsevier

【 摘 要 】

In this paper, a simultaneous three-mode silicon (de)multiplexer using a trident coupler and a 3 x 3 multimode interference (MMI) is presented. The fundamental (TE0), first-order (TE1), and second-order (TE2) modes at the input are successfully demultiplexed and converted to three uniform fundamental modes (TE0) at the output ports. The device is designed and optimized by numerical simulation using three-dimensional beam propagation method together with effective index method. The three-mode (de)multiplexing is achieved over the whole C-band with small insertion loss (< 0.9 dB) and crosstalk (< -17 dB). The proposed device also features with a small footprint (5 mu mx400 mu m) and a large fabrication tolerance against chip-size variations while maintaining the desired optical performance.

【 授权许可】

Free