Waveguide transmission
First Claim
1. A method for improving light transmission through a chip comprising at least one waveguide comprising:
- providing a chip comprising at least one waveguide; and
providing to the waveguide on the chip illumination light from a laser, wherein the wavelength of the illumination provided by the laser is modulated over time within a range of wavelengths, wherein the range of wavelength modulation is less than 1 nm, whereby the waveguide exhibits less back reflection than when the laser wavelength is not modulated.
1 Assignment
0 Petitions
Accused Products
Abstract
We have seen that some waveguides exhibit variable and increasing back reflection of single wavelength illumination over time, limiting their effectiveness and reliability. We have developed approaches to improve the transmission of these waveguides. We have found that by modulating the illumination wavelength over a small wavelength range we can reduce or eliminate this back reflection from the waveguide. In addition, we describe the writing and erasing of gratings within SiON waveguides by forming standing waves. Methods, systems, instruments, and devices are described that provide improved transmission of light through such waveguides.
159 Citations
18 Claims
-
1. A method for improving light transmission through a chip comprising at least one waveguide comprising:
-
providing a chip comprising at least one waveguide; and providing to the waveguide on the chip illumination light from a laser, wherein the wavelength of the illumination provided by the laser is modulated over time within a range of wavelengths, wherein the range of wavelength modulation is less than 1 nm, whereby the waveguide exhibits less back reflection than when the laser wavelength is not modulated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification