Abstract
In this paper, a design for a 1 × 4 optical power splitter based on the multimode interference (MMI) coupler in a silicon (Si)-gallium nitride (GaN) slot waveguide structure is presented-to our knowledge, for the first time. Si and GaN were found as suitable materials for the slot waveguide structure. Numerical optimizations were carried out on the device parameters using the full vectorial-beam propagation method (FV-BPM). Simulation results show that the proposed device can be useful to divide optical signal energy uniformly in the C-band range (1530-1565 nm) into four output ports with low insertion losses (0.07 dB).
| Original language | English |
|---|---|
| Article number | 516 |
| Journal | Materials |
| Volume | 9 |
| Issue number | 7 |
| DOIs | |
| State | Published - 25 Jun 2016 |
Bibliographical note
Publisher Copyright:© 2016 by the authors.
Keywords
- Multimode interference (MMI)
- Optical splitter
- Slot waveguide