Astrophotonics is the application of photonic technologies to channel, manipulate, and
disperse light from one or more telescopes to achieve scientific objectives in astronomy in …

Recently, high-performance thin-film lithium niobate optical modulators have emerged that,
together with advanced multiplexing technologies, are highly expected to satisfy the ever …

Several applications in modern photonics require compact on-chip optical filters with a
tailored spectral response. However, achieving subnanometric bandwidths and high …

Integrated photonic spectrographs offer an avenue to extreme miniaturization of
astronomical instruments, which would greatly benefit extremely large telescopes and future …

We present a silicon nitride/silicon dioxide add–drop filter operating on arbitrarily spaced
channels using multimode interferometers (MMIs) and complex waveguide Bragg gratings …

Optical microcavity based four-wave mixing (FWM) and its various applications, such as
entangled photon pair generation, have been intensively studied in the past few years …

Arrayed waveguide gratings with reusable delay lines (RDL-AWGs) are demonstrated as
high resolving power integrated photonic spectrometers. One of the devices is 71 times …

In this paper, we present the design, optimization, and implementation of a sub-wavelength
grating (SWG) multi-mode interference coupler (MMI) on the silicon nitride photonic …

On-chip high extinction ratio Mach-Zehnder interferometers (MZI) have always attracted
interest from researchers as it can be used in many applications including astrophotonics …

We propose, analyze and demonstrate a side-coupled Fabry-Perot (FP) resonator filter
composed of two dissimilar waveguides with π phase-shifted Bragg grating. The resonance …