A temperature-tunable etalon for optical telecommunication wavelength

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Members

Shi Yicheng (A0054800R), Du Jinyi (A0227185B)

Rationale

A Fabry-Perot interferometer (or an Etalon), being probably the simplest form of all interferometers, is found useful in a variety of optical applications such as spectral filtering or frequency referencing.

Characteristic Parameters of an Etalon

Building an Etalon Out of Silicon Wafer

Design

(this section will stay empty for a long time...)

Performance

Bare Silicon Wafer

Transmission spectrum of a bare silicon wafer of 100μm Zoom in of the spectrum, showing a free spectral range of ~2.3nm (~400GHz)

HR Coated Silicon Wafer

Temperature Tuning of silicon etalon