Erbium (Er)-doped fiber amplifier (EDFA) has achieved great success in modern optical
communications for decades due to its outstanding gain performance in C-band. Nowadays …

Femtosecond laser pulses enable the synthesis of light across the electromagnetic spectrum
and provide access to ultrafast phenomena in physics, biology, and chemistry. Chip …

Silicon nitride (Si_3N_4)-on-SiO_2 attracts increasing interest in integrated photonics owing
to its low propagation loss and wide transparency window, extending from∼ 400 nm to 2350 …

Silicon photonics is an ideal platform for low‐cost, energy‐efficient, and high‐performance
optical microsystems. However, because silicon is an inefficient light emitting material, the …

Extending the cavity length of diode lasers with feedback from Bragg structures and ring
resonators is highly effective for obtaining ultra-narrow laser linewidths. However, cavity …

We prepared an Er 3+-doped gallium oxide amorphous film using a radio frequency
magnetron sputtering method and fabricated the waveguide using ultraviolet lithography …

Subwavelength grating (SWG) metamaterial waveguides and ring resonators on a silicon
nitride platform are proposed and demonstrated. The SWG waveguide is engineered such …

Supercontinuum generation (SCG) is an important nonlinear optical process enabling
broadband light sources for many applications, for which silicon nitride (Si_3N_4) has …

We designed and fabricated a double-layered structure Er^ 3+: Ta_2O_5 waveguide and
investigated its optical amplification performance in C band. The pump laser threshold for …

Silicon photonics is coming of age; however, it is still lacking a monolithic platform for optical
sources and nonlinear functionalities prompting heterogeneous integration of different …