scholarly journals Highly stable polarization independent Mach-Zehnder interferometer

2014 ◽  
Vol 85 (8) ◽  
pp. 083103 ◽  
Author(s):  
Michal Mičuda ◽  
Ester Doláková ◽  
Ivo Straka ◽  
Martina Miková ◽  
Miloslav Dušek ◽  
...  
Keyword(s):  
Zehnder Interferometer ◽  
Polarization Independent ◽  
Mach Zehnder Interferometer

scholarly journals Ultra-Compact and Ultra-Broadband Polarization-Insensitive Mach–Zehnder Interferometer in Silicon-on-Insulator Platform for Quantum Internet Application

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 455
Author(s):  
Jingjing Zhang ◽  
Zhaojian Zhang ◽  
Chao Ma ◽  
Xuefeng Chen ◽  
Liping Liu ◽  
...  
Keyword(s):  
Transverse Magnetic ◽  
Silicon On Insulator ◽  
Zehnder Interferometer ◽  
Excess Loss ◽  
Order Of Magnitude ◽  
Integrated Silicon Photonics ◽  
Quantum Technology ◽  
Quantum Internet ◽  
Polarization Independent ◽  
Mach Zehnder Interferometer

Polarization dependence in integrated silicon photonics has a detrimental effect on the manipulation of quantum state with different polarizations in the quantum technology. Those limits have profound implications for further technological developments, especially in quantum photonic internet. Here, we propose a polarization-independent Mach–Zehnder interferometer (MZI) structure based on a 340 nm-thick silicon-on-insulator (SOI) platform. The MZI facilitates low loss, broad operating bandwidth, and large tolerance of the fabrication imperfection. We achieve an excess loss of <10% and an extinction radio of >18 in the 100 nm bandwidth (1500∼1600 nm) for both transverse electric (TE) and transverse magnetic (TM) modes. We numerically demonstrate an interference visibility of 99% and a polarization-independent loss (PDL) of 0.03 for both polarizations at 1550 nm. Furthermore, by using the principle of phase compensation and self-image, we shorten the length of the waveguide taper by almost an order of magnitude with the transmission of >95% for both TE and TM polarizations. Up to now, the proposed structure could significantly improve the integration and promote the development of monolithic integrated quantum internet.

Sign in / Sign up

Export Citation Format

Share Document