Optimum access waveguide width for 1 x N multimode interference couplers on silicon nanomembrane.
نویسندگان
چکیده
We derived an analytical formula for the optimum width of the access waveguides of 1 x N multimode interference (MMI) couplers. Eigenmode-decomposition-based simulations show that the optimum width relation corresponds to the points of diminishing returns in both insertion loss and output uniformity versus access waveguide width. We fabricate and characterize 1 x 12 MMI couplers on a nanomembrane of silicon-on-insulator substrate. The experimental investigations demonstrate that the analytical results can be reliably used as a design rule for MMI couplers with large number of outputs.
منابع مشابه
Optimizing Imbalance and Loss in 2 2 3-dB Multimode Interference Couplers via Access Waveguide Width
The imbalance and excess loss in multimode interference couplers with fabrication errors are examined. Remarkably, there exists a number of optimum access waveguide widths which give a minimum imbalance. Furthermore, quite low excess loss can be simultaneously achieved by choosing one particular optimum width. It is also shown that paired interference couplers have better imbalance performance ...
متن کاملDemonstration of Compact 2x2 Multimode Interference Coupler on Silicon Nanomembrane
We designed and fabricated a 2x2 tapered multimode interference coupler on silicon-oninsulator with dimensions of 12.88μm×3μm. The device keeps a 50/50 splitting ratio over a 50nm bandwidth. To our best knowledge this is the most compact 2x2 MMI demonstrated. ©2010 Optical Society of America OCIS codes: (130.3120) Integrated optics devices; (130.2790) Guided waves
متن کاملUltralow-loss silicon waveguide crossing using Bloch modes in index-engineered cascaded multimode-interference couplers.
We investigate the loss mechanism in three-moded multimode-interference couplers that are the building blocks of a compact and low-loss waveguide crossing structure. Broadband silicon waveguide crossing arrays with <0.01 dB insertion loss per crossing are proposed using cascaded multimode-interference couplers, where lateral subwavelength nanostructures are used to reduce the insertions loss. ...
متن کاملOn the Optimum Design for 1xN Multimode Interference Coupler based Beam Splitters
An analytical formula for optimum 1xN multimode input/output channel width is derived for improved performance based on the insertion loss and output uniformity. Experimental investigation of a SOI based 1x12 MMI confirms the analytical results. ©2010 Optical Society of America OCIS codes: (130.3120) Integrated optics devices; (130.2790) Guided waves
متن کاملOptical Wavelength and Dimensions Tolerance Criterion for Multimode Interference Couplers
The self-imaging property of a homogeneous multi-moded planar optical waveguide has been applied in the design optical couplers based on multimode Interference (MMI). Based on this design, the optical wavelength and dimensions tolerance for MMI-3dB couplers are investigated analytically. They are shown to be inversely proportional to the multimode section width. Among Symmetrical, paired, and g...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Optics letters
دوره 35 17 شماره
صفحات -
تاریخ انتشار 2010