Inverse design of efficient and compact 1 × N wavelength demultiplexer
| Autor: | Hamza Kurt, Yusuf Abdulaziz Yilmaz, Aydan Yeltik, Ahmet Mesut Alpkilic |
|---|---|
| Přispěvatelé: | TOBB ETU, Faculty of Engineering, Department of Electrical & Electronics Engineering, TOBB ETÜ, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Kurt, Hamza |
| Rok vydání: | 2020 |
| Předmět: |
Fabrication
Demultiplexer Silicon photonics Nanophotonics Optical communication 02 engineering and technology 01 natural sciences Multiplexer Inverse design of nanophotonics 010309 optics Optics 0103 physical sciences Electrical and Electronic Engineering Physical and Theoretical Chemistry Optical interconnect Physics business.industry Wavelength division (de)multiplexer 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Wavelength 0210 nano-technology business Objective-first algorithm |
| Zdroj: | Optics Communications. 454:124522 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2019.124522 |
| Popis: | In this paper, we propose efficient and compact 2D T-junction 1 × N in-plane-incidence wavelength demultiplexers by using recently developed objective-first inverse design algorithm. Ultra-high device performance was achieved for the specific designs of 1 × 2 , 1 × 4 , and 1 × 6 wavelength (de)multiplexers with small footprints 2 . 80 μ m × 2 . 80 μ m , 4 . 60 μ m × 2 . 80 μ m , 6 . 95 μ m × 2 . 80 μ m , respectively. We used two approaches to binarize – epsilon threshold and binarization-cost – to obtain silicon wavelength demultiplexer considering fabrication constraints. For instance, the transmission efficiency of binarization-cost 1 × 2 demultiplexer was − 0 . 30 dB for 1 . 31 μ m and − 0 . 54 dB at 1 . 55 μ m while crosstalks at the operating wavelengths are negligibly small, i.e., − 17 . 80 and − 15 . 29 dB , respectively. Moreover, for the binarization-cost 1 × 4 demultiplexer, the transmission efficiency values were approximately − 1 . 90 dB at 1 . 31 , 1 . 39 , 1 . 47 , and 1 . 55 μ m as the crosstalk was approximately − 13 dB . Furthermore, the objective-first algorithm was used to employ our demultiplexers as multiplexers, which means the ports that were once used as inputs in demultiplexers are designed to be used as outputs. We envision that the devices are compact, reliable, and T-shaped that is useful for optical communication systems. These rudimentary results are also relevant to the burgeoning field of nanophotonics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect