On-Chip Optical Waveguide Passive Devices: Key Components for Integrated Photonics

On-chip optical waveguide passive devices are essential components in integrated photonics. They allow for the manipulation and control of light within a chip-scale platform, enabling various applications in optical communication, sensing, and computing. These passive devices are typically made of silicon, silicon nitride, or other material systems that are compatible with complementary metal-oxide-semiconductor (CMOS) processing. They can be fabricated using standard lithography and etching techniques, making them highly scalable and cost-effective. Some examples of on-chip optical waveguide passive devices include couplers, splitters, filters, and multiplexers. The development of these devices has greatly improved the performance and functionality of integrated photonics, paving the way for new and exciting applications in the field.