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Wavelength independent multimode interference coupler
- Source :
- Optics Express. 21:7033
- Publication Year :
- 2013
- Publisher :
- The Optical Society, 2013.
-
Abstract
- We propose an ultra-broadband multimode interference (MMI) coupler with a wavelength range exceeding the O, E, S, C, L and U optical communication bands. For the first time, the dispersion property of the MMI section is engineered using a subwavelength grating structure to mitigate wavelength dependence of the device. We present a 2 × 2 MMI design with a bandwidth of 450nm, an almost fivefold enhancement compared to conventional designs, maintaining insertion loss, power imbalance and MMI phase deviation below 1dB, 0.6dB and 3°, respectively. The design is performed using an in-house tool based on the 2D Fourier Eigenmode Expansion Method (F-EEM) and verified with a 3D Finite Difference Time Domain (FDTD) simulator. © 2013 Optical Society of America.
- Subjects :
- sub-wave length grating
Eigen-mode expansion
design
Eigenmode expansion
Optical communication
dispersion properties
Grating
symbols.namesake
Optics
telecommunication
optical communication bands
Insertion loss
wavelength dependence
Physics
computer aided design
business.industry
Bandwidth (signal processing)
Finite-difference time-domain method
time domain analysis
Equipment Design
Surface Plasmon Resonance
finite difference time domain method
Atomic and Molecular Physics, and Optics
Equipment Failure Analysis
Refractometry
Wavelength
Fourier transform
conventional design
integrated optics
equipment failure
Telecommunications
symbols
Computer-Aided Design
3D finite difference time domains
business
multimode interference couplers
equipment
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Optics Express
- Accession number :
- edsair.doi.dedup.....b183309ad801121f19c85306c896eebf