Bibliographic Details
| Title: |
A Silicon Photonic 32-Input Coherent Combiner for Turbulence Mitigation in Free Space Optics Links |
| Authors: |
De Marinis, Lorenzo, Kincaid, Peter Seigo, Lucas, Yann, Krafft, Lea, Michau, Vincent, Cherchi, Matteo, Karppinen, Mikko, Contestabile, Giampiero |
| Publication Year: |
2024 |
| Collection: |
Physics (Other) |
| Subject Terms: |
Physics - Optics, Electrical Engineering and Systems Science - Signal Processing |
| More Details: |
A photonic integrated circuit (PIC) for the coherent combination of 32 input optical signals into a single output fiber is reported. The PIC was fabricated using a low-loss thick silicon-on-insulator (SOI) process and packaged with 32 input and 1 output fibers. The basic building block is a 2x2 Mach-Zehnder interferometer (MZI) with an external (to the MZI branches) and an internal thermal phase shifter, and a bandwidth in excess of 80 kHz. The PIC monolithically integrates 31 MZIs and 31 germanium photodetectors, and is suitable in principle for turbulence mitigation in LEO-ground and horizontal free space optics links. Improvements to the device for the coherent combination of 64 inputs and for the reduction of insertion losses are also discussed |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2406.02076 |
| Accession Number: |
edsarx.2406.02076 |
| Database: |
arXiv |
