CWDM Grating Array
Applications
- Accurate transmission notch filters
- Reflection filters
- Tunable filters
- Diode laser stabilization
Stratophase
patented technology – Direct Grating Writing –
allows planar
Bragg gratings covering the
entire ITU wavelength grid (1271 to 1611nm) to be defined in a single
process. This technique uses a rapid, single-step fabrication process
directly resulting in low cost, high-density planar Bragg grating
devices.
The silica based planar devices feature arrays of channel devices suitable for multiple applications and compatible with bulk optics and fiber technology. Each 10mm wide chip consists of an array of channel waveguides fabricated from silica on a silicon substrate. The silicon substrate provides a thermally conductive and mechanically flat base for device stability. The channel waveguide is buried, with over and underclad layers isolating the waveguides from the environment. Each waveguide has a specific Bragg grating, that can be utilized in both transmission and reflection modes of operation, and corresponds to a channel within the CWDM grid. Each sample is end polished allowing straightforward fiber launch into the waveguides.
Chips are mounted within a clip designed for use with the Stratophase oven and temperature controller system for rapid mounting and uniform thermal control. When operated between 30°C and 100°C, these two devices provide Bragg 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
- Single chip spans the ITU-G.694.2 grid (1271nm to 1611nm)
- Suitable for both transmission and reflection
- Channels and gratings buried for low loss stable operation
- Option of mounting clip compatible with oven PV20 and
temperature controller TC200 for short range thermal tuning
Specifications
- Buried channel waveguides – silica-on-silicon
- Spacing between waveguides 250μm
- 18 channels per chip, each containing a single Bragg grating
- Each Bragg grating corresponds to the center wavelength of each ITU CWDM channel ±0.4nm
- Temperature tuneable over ±0.4nm
For Further information on this product please contact Stratophase.