waveguide – TechConnect Briefs

On-chip spectrometer for low-cost optical coherence tomography

Nitkowski A., Preston K., Sherwood-Droz N., Schmidt B., Hajian A., Tornado Spectral Systems, US

Tornado Spectral Systems has developed a new spectrometer called OCTANE, the Optical Coherence Tomography Advanced Nanophotonic Engine, consisting of chip-based spectrometers for spectral domain optical coherence tomography (SD-OCT) systems. These devices include planar lightwave circuits [...]

A Negative Index Metamaterial Waveguide for De-Multiplexing

Vidal X., Baev A., Furlani E.P., Prasad P.N., The Institute for Lasers, Photonics and Biophotonics, US

In this presentation, we propose a novel metamaterial-based waveguide coupler for use as a de-multiplexer at telecommunication wavelengths. Currently, there have been relatively few studies of guided modes in left-handed waveguides; these have indentified some [...]

Bulk-Titanium Waveguide – a New Building Block for Microwave Planar Circuits

Huang X.T., Todd S., Ding C., MacDonald N.C., University of California at Santa Barbara, US

We present a new topology for planar microwave transmission line: bulk titanium waveguide. The waveguide is formed by deep trench etching, dielectric gap filling, and planarization. The high aspect ratio of the resulting structure provide [...]

Engineering the Spectral Response of Waveguide Bragg Gratings Patterned by Deep Ultraviolet Nanolithography

Greiner C.M., Iazikov D., Mossberg T.W., Ticknor A., McGinnis B., LightSmyth Technologies, US

Recent advances in deep ultra-violet (DUV) photolithographic patterning tools have enabled the scribing of essentially arbitrary diffractive structures with feature sizes even below 100 nm that can be precision-placed to within a few nanometers in [...]

Optical Micro-Spectrometer with Sub-Nanometer Resolution

Avrutsky I., Chaganti K., Salakhutdinov I., Auner G., Wayne State University, US

We develop a super compact optical fluorescence spectrometer. Our unique innovative design combines advantages of guided wave planar optics and free-space microoptics. This innovation allows for miniaturization that is not achievable with pure planar or [...]