Features

Two chips offering Bragg grating responses over the ITU C-band (1530.33nm - 1569.59nm)

Each chip has 25 channels, each is temperature tunable over 100GHz

Suitable for both transmission and reflection

Pre-mounted for easy use with our PPLN oven

This silica-on-silicon UV written chip contains an array of Bragg gratings, suitable for experiments in a DWDM laboratory. This device is manufactured by our strategic partner Stratophase Ltd. using their patented direct grating writing technology, which enables fabrication of Bragg gratings with precise control over the grating period and structure. This process removes the need for custom phase masks for each design of Bragg grating, thus enabling cost effective, integrated, optical Bragg gratings. Each 10mm wide chip consists of an array of channel waveguides in a three-layer, silica-on-silicon platform. The silicon substrate provides a thermally conductive and mechanically flat base for device stability. The channel waveguides are buried with over and underclad layers, isolating the waveguides from the environment. Each sample is end polished, on both the input and exit facets, allowing straightforward launch into the waveguide. The device is mounted within a clip designed for use with the PPLN oven and temperature controller system for rapid mounting and uniform thermal control. Each device consists of 25 single mode channel waveguides, each with a Bragggrating that can be used in both reflection and transmission modes. The grating wavelengths are separated by 100GHz channel spacing and can be thermally tuned to the precise desired wavelength. When operated in the Thorlabs oven between 30°C and 100°C, these two devices provide Bragg gratings over the entire C band and as such, can be tuned to any C-band channel on the 100, 50, 25 and 12.5GHz ITU grids.

Example Applications

Accurate transmission notch filters

Reflection filters

Tunable filters

Diode laser stabilization

Laboratory stock Bragg gratings