DWDM Grating Array
Applications
- Accurate transmission notch filters
- Reflection filters
- Tuneable filters
- Diode laser stabilization
- Laboratory stock Bragg gratings
This silica-on-silicon UV
written chip contains an array of Bragg gratings, suitable for
experiments in a DWDM laboratory. The device is manufactured using
Direct Grating Writing, which enables fabrication of Bragg gratings
with precise control over the grating period and structure. This
in turn removes the need for custom phase masks for each design of Bragg
grating and produces 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 controller system for rapid mounting and uniform thermal control. Each device consists of 25 single mode channel waveguides, each containing a Bragg grating 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 between 30°C and 100°C these two devices provide gratings over the entire C band and can be tuned to any C band channel on the 100, 50, 25 and 12.5GHz ITU grids.
Features
- Two chips offering Bragg grating responses over the ITU C band
- (1530.33nm - 1569.59nm)
- Each chip has 25 channels each is temperature tuneable over 100GHz
- Suitable for both transmission and reflection
- Pre-mounted for easy use with PPLN oven
Specifications
- Buried channel waveguides – silica-on-silicon
- Spacing between waveguides 250μm.
- 25 single mode channels per chip each containing a single Bragg grating.
- Each Bragg grating corresponds to the wavelength of adjacent ITU channels
- Each grating tuneable by temperature over 0.77nm.
For Further information on this product please contact Stratophase.