Design and fabrication of multimode interference couplers based on digital micro-mirror system

Abstract

Multimode interference (MMI) couplers, based on the self-imaging effect(SIE) ，are accepted popularly in integrated optics. According to the importance of MMI devices, in this paper, we present a novel method to design and fabricate MMI couplers. A technology of maskless lithography to make MMI couplers based on a smart digital micro-mirror device (DMD) system is proposed. A 1×4 MMI device is designed as an example, which shows the present method is efficient and cost-effective.Keywords：self-imaging effect (SIE), multimode-interference (MMI) couplers, digital micro-mirror device (DMD), maskless lithography

Simulation & Evaluation of (OADM) Based on Bragg Gratings and 3dB MMI Couplers

“…The NRZ modulation format was chosen to be (NRZ) because it is widely used in optical communication systems. The performances of the OADM results are shown in Table (4) when sixteen channels are used in DWDM systems. The variation between the Q-factor and fiber transmission distances is shown in Fig.…”