Patent ID: 9720237
Date: 2017-08-01
CPC Classifications: G02B

Claim:
1. An optical device, comprising: a first waveguide having a first input region for receiving input light into the first waveguide and a first output region for emitting a first output light from the first waveguide, the first waveguide reflecting a first predetermined wavelength range of the input light within the first waveguide towards the first output region, the first waveguide having a first pass-through region for emitting the input light; a first stacked structure for receiving the input light from the first pass-through region, the first stacked structure suppressing the first predetermined wavelength range from the input light to emit a first filtered light, wherein suppressing the first predetermined wavelength range includes absorbing and reflecting light within the first predetermined wavelength range; a second waveguide having a second input region for receiving the first filtered light into the second waveguide and a second output region for emitting a second output light from the second waveguide, the second waveguide reflecting a second predetermined wavelength range of the first filtered light within the second waveguide towards the second output region, the second waveguide having a second pass-through region for emitting the first filtered light; a second stacked structure for receiving the first filtered light from the second pass-through region, the second stacked structure configured suppressing the second predetermined wavelength range from the first filtered light to emit a second filtered light, wherein suppressing the second predetermined wavelength range includes absorbing and reflecting light within the second predetermined wavelength range; and a third waveguide having a third input region for receiving the second filtered light into the third waveguide and a third output region for emitting a third output light from the third waveguide, the third waveguide reflecting a third predetermined wavelength range of the second filtered light within the third waveguide towards the third output region.