Synthesis of Hadamard transformers by use of multimode interference optical waveguides

被引：28

作者：

Gupta, AR ^{[1
]}

Tsutsumi, K ^{[1
]}

Nakayama, J ^{[1
]}

机构：

[1] Kyoto Inst Technol, Fac Engn & Design, Dept Elect & Informat Sci, Sakyo Ku, Kyoto 6068585, Japan

来源：

APPLIED OPTICS | 2003年 / 42卷 / 15期

关键词：

D O I：

10.1364/AO.42.002730

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a synthesis method of optical Hadamard transformers using multimode interference (MMI) couplers. By using the signal transfer matrix of 2 x 2, 4 x 4, and 8 x 8 MMI couplers, we show that sum and difference units of input signals can be synthesized. An interchange unit of two signals can also be synthesized. One synthesis method of Hadamard transformers is a combination of only 2 x 2 units, and the other is a combination of N x N(N greater than or equal to 4) units as well as 2 x 2 units. The design examples of operation units are shown, and the size and the output power. of Hadamard transformers are estimated. (C) 2003 Optical Society of America.

引用

页码：2730 / 2738

页数：9

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