Laser Doppler vibrometry (LDV) is a non-contact vibration measurement technique based
on the Doppler effect of the reflected laser beam. Thanks to its feature of high resolution and …

The integrated optical 90-degree hybrid is a crucial component for coherent receivers. Here,
we simulate and fabricate a 4?×? 4 multimode interference coupler as a 90-degree hybrid …

A semi-analytical method for the S-parameter calculations of an N× M multimode
interference coupler (MMI coupler) is presented. The proposed semi-analytical method is …

Abstract Ultra-Compact 90° Hybrid Design The optical 90° hybrid uses a 4× 4 MMI coupler
with an ultra-compact footprint of~ 9 μm× 107 μm, which is 3 times shorter than previous …

Multimode interference couplers have been increasingly utilized in a variety of photonic
scenarios. However, manually designing a coupler with sufficiently high coupling efficiency …

We performed an experimental demonstration of a wedge-shaped optical 90° hybrid coupler
on the thin-film lithium niobate (TFLN) platform, utilizing a paired-interference-based 2?×? 4 …

The 90° optical hybrid is a key component for decoding phase information, and its
performance is limited by the crosstalk of crossed waveguide and bandwidth. We proposed …

We design a broadband free space 2× 4 90° optical hybrid over a spectral window of 1000–
1200 nm and 1470–1650 nm and verify the feasibility of the scheme experimentally. The …

Mixer is an indispensable component in electronic communication system, and it is the
frontend circuit of heterodyne receiver and microwave measuring instrument, which is used …

We design an ultracompact, broadband, and low-loss 90-deg optical hybrid coupler using a
silicon-on-insulator (SOI) material platform for coherent receivers in optical communication …