High bandwidth all-optical 3x3 switch based on multimode interference structures

A high bandwidth all-optical 3×3 switch based on general interference multimode interference (GI-MMI) structure is proposed in this study. Two 3×3 multimode interference couplers are cascaded to realize an alloptical switch operating at both wavelengths of 1550 nm and 1310 nm. Two nonlinear directional couplers at two outer-arms of the structure are used as all-optical phase shifters to achieve all switching states and to control the switching states. Analytical expressions for switching operation using the transfer matrix method are presented. The beam propagation method (BPM) is used to design and optimize the whole structure. The optimal design of the all-optical phase shifters and 3×3 MMI couplers are carried out to reduce the switching power and loss.

Title:	High bandwidth all-optical 3x3 switch based on multimode interference structures
Authors:	Le, Duy Tien Cao, Dung Truong Le, Trung Thanh
Keywords:	All-optical switches Wavelength selective switches MMI coupler Nonlinear directional coupler Nonlinear phase shifters
Issue Date:	2017
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Citation:	ISIKNOWLEDGE
Abstract:	A high bandwidth all-optical 3×3 switch based on general interference multimode interference (GI-MMI) structure is proposed in this study. Two 3×3 multimode interference couplers are cascaded to realize an alloptical switch operating at both wavelengths of 1550 nm and 1310 nm. Two nonlinear directional couplers at two outer-arms of the structure are used as all-optical phase shifters to achieve all switching states and to control the switching states. Analytical expressions for switching operation using the transfer matrix method are presented. The beam propagation method (BPM) is used to design and optimize the whole structure. The optimal design of the all-optical phase shifters and 3×3 MMI couplers are carried out to reduce the switching power and loss.
Description:	TNS06973 ; OPTICS COMMUNICATIONS Volume: 387 Pages: 148-152 Published: MAR 15 2017
URI:	http://repository.vnu.edu.vn/handle/VNU_123/28156
ISSN:	0030-4018 1873-0310
Appears in Collections:	Bài báo của ĐHQGHN trong Web of Science