WDM Mux/DeMux employing filters shaped for maximum use thereof

摘要

Filters shaped differently from those commonly used in WDM Mux/DeMux optical devices are described. Different from the prior art devices that commonly use filters shaped in cuboid, the filters in the embodiment of the present invention are shaped in parallelepiped. In other words, a cross section of such filter is not in parallelogram. According to one embodiment of the present invention, a filter is so cut that a cross section thereof presents a cutting angle not being 90 degrees. As a result, the filter is fully used in WDM Mux/DeMux optical devices. Such filters are advantageously used in compact optical modules.

主权项

1. An optical device comprising:
an array of reflecting parts; an array of filters, each of the filters configured to allow a light beam at a selected wavelength to pass through, being a parallelepiped in shape, fully used to transmit a light beam at a selected wavelength, wherein each of the reflecting parts is positioned to correspond to one of the filters and redirects a light beam reflected from one of the filters to another one of the filters.