1. Multiband processing of multimode light: combining 3D photonic lanterns with waveguide Bragg gratings
- Author
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Jon Lawrence, Simon Gross, Izabela Spaleniak, Nemanja Jovanovic, Robert J. Williams, Michael J. Withford, and Michael J. Ireland
- Subjects
Multi-mode optical fiber ,Materials science ,business.industry ,Astrophysics::Instrumentation and Methods for Astrophysics ,Physics::Optics ,Condensed Matter Physics ,Multiplexing ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,Narrowband ,Transmission (telecommunications) ,law ,Femtosecond ,Optoelectronics ,Photonics ,business ,Waveguide ,Lantern - Abstract
The first demonstration of narrowband spectral filtering of multimode light on a 3D integrated photonic chip using photonic lanterns and waveguide Bragg gratings is reported. The photonic lanterns with multi-notch waveguide Bragg gratings were fabricated using the femtosecond direct-write technique in boro-aluminosilicate glass (Corning, Eagle 2000). Transmission dips of up to 5 dB were measured in both photonic lanterns and reference single-mode waveguides with 10.4-mm-long gratings. The result demonstrates efficient and symmetrical performance of each of the gratings in the photonic lantern. Such devices will be beneficial to space-division multiplexed communication systems as well as for units for astronomical instrumentation for suppression of the atmospheric telluric emission from OH lines.
- Published
- 2013
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