Coupling Ideality of Integrated Planar High-QMicroresonators

Coupling Ideality of Integrated Planar High-Q Microresonators

Chip-scale optical microresonators with integrated planar optical waveguides are useful building blocks for linear, nonlinear, and quantum-optical photonic devices alike. Loss reduction through improving fabrication processes results in several integrated microresonator platforms attaining quality (Q) factors of several millions. Beyond the improvement of the quality factor, the ability to oper...

Planar-integrated free-space optics with high efficiency

Planar-integrated free-space optical (PIFSO) systems have been in the center of the research at the ONT group for about 10 years. During that time, we could demonstrate the viability of this approach to build optical microsystems for applications in optical interconnection and sensing. An essential step towards practicality is now being taken, namely, the design and fabrication of systems with ...

Planar Integrated Optical

WLAN Substrate Integrated Waveguide Filter with Novel Negative Coupling Structure

A fourth-degree Substrate Integrated Waveguide (SIW) crossed coupled band pass filter for WLAN band is designed by using a new negative coupling structure. It consists of two U shape microstrip lines on top and bottom planes with via holes at the center of them. This paper investigates the phase characteristics of negative and positive coupling structures and their effects. The design, fabricat...

A simplified broadband coupling approach applied to chemically robust sol-gel, planar integrated optical waveguides.

A new generation waveguide spectrometer with broadband coupling capabilities has been developed. As opposed to previous devices, this attenuated total reflection (ATR) spectrometer is much simpler in design, is more chemically robust, and transmits light down to at least 400 nm. The attenuated total reflection element consists of a single-mode, planar integrated optical waveguide fabricated by ...