Athermal AWG Multi / Demultiplexer
NEL
Designed for WDM systems, our athermal arrayed-wavelength grating (AWG) can combine and split optical signals of different wavelengths without using a temperature control device and without a source of electrical power.
Conventional AWGs consist of lightwave circuits made of quartz glass waveguides. The index of refraction of quartz glass, however, changes depending upon temperature, which means that the wavelengths of transmitted light also change.
To prevent this, a separate temperature control device had to be used. Our athermal AWG solves this problem by using a special silicon resin in part of the lightwave circuit that has a different temperature coefficient than quartz glass. This design cuts the temperature dependence of the wavelengths of transmitted light to less than one-tenth of its original value, which makes using a temperature-control device unnecessary.
To prevent this, a separate temperature control device had to be used. Our athermal AWG solves this problem by using a special silicon resin in part of the lightwave circuit that has a different temperature coefficient than quartz glass. This design cuts the temperature dependence of the wavelengths of transmitted light to less than one-tenth of its original value, which makes using a temperature-control device unnecessary.
Main Features
- Combines and splits optical signals without using a temperature-control device
- Can be installed anywhere, because no power source is needed to run a temperature-control device
- Only about half as thick as conventional AWGs because it does not contain a temperature-control device element
- Can be used in harsh environments because it contains no electrical components used for temperature control
Athermal AWG Multi/Demultiplexer More information
Fibre Optics 
