Unconstrained splitting ratios in compact double-MMI couplers

被引：30

作者：

Cherchi, Matteo ^{[1
]}

Ylinen, Sami ^{[1
]}

Harjanne, Mikko ^{[1
]}

Kapulainen, Markku ^{[1
]}

Vehmas, Tapani ^{[1
]}

Aalto, Timo ^{[1
]}

机构：

[1] VTT Tech Res Ctr Finland, Espoo 02040, Finland

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 08期

关键词：

MULTIMODE INTERFERENCE COUPLERS; SILICON-ON-INSULATOR; 2X2;

D O I：

10.1364/OE.22.009245

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel guided-wave optical power coupler is presented, based on two 2x2 50/50 multimode interference splitters connected with tapered waveguides that play the role of a phase shifter. By simply changing the length of this phase shifter, these double-MMI couplers can be easily designed to get any desired splitting ratio. Results of simulations are discussed and compared with the characterizations of devices fabricated on micron-scale SOI wafers, to highlight pros and cons of the proposed solution. The fabricated splitters have been found to have average losses about 0.4 +/- 0.5 dB and splitting ratios ranging from 56/44 to 96/4. (C) 2014 Optical Society of America

引用

页码：9245 / 9253

页数：9

共 14 条

[1] OVERLAPPING-IMAGE MULTIMODE INTERFERENCE COUPLERS WITH A REDUCED NUMBER OF SELF-IMAGES FOR UNIFORM AND NONUNIFORM POWER SPLITTING [J].