Towards femtosecond laser written arrayed waveguide gratings

4 Arrayed Waveguide Gratings

Direct laser written waveguide-Bragg gratings in bulk fused silica.

Optical waveguides that incorporate Bragg gratings have been written in bulk fused silica by using the femtosecond laser direct-write method and without the need for lithography or ion-beam techniques. A single manufacturing process is used to create waveguide-Bragg grating reflectors for operation in the C band.

Highly polarized all-fiber thulium laser with femtosecond-laser-written fiber Bragg gratings.

We demonstrate and characterize a highly linearly polarized (18.8 dB) narrow spectral emission (<80 pm) from an all-fiber Tm laser utilizing femtosecond-laser-written fiber Bragg gratings. Thermally-dependent anisotropic birefringence is observed in the FBG transmission, the effects of which enable both the generation and elimination of highly linearly polarized output. To our knowledge, this i...

Miniature Spectrographs: Characterization of Arrayed Waveguide Gratings for Astronomy

We present results from a laboratory characterization of integrated photonic arrayed-waveguide grating chips, which are a modified version of commercial arrayed-waveguide grating multiplexors, for the purposes of creating an integrated photonic spectrograph. Using a robust probing setup we measure the peak total efficiency of the chips to be ~75%. We measure the spectral resolution full-width h...

An optical packet network based on arrayed waveguide gratings

This work presents PrimeNet, a novel architecture for optical multihop networks and investigates a Medium Access Control (MAC) protocol and a fairness algorithm for it. The network architecture is based on an Arrayed Waveguide Grating, a passive optical device that is used widely as wavelength multiplexer/demultiplexer, today. Relying on a physical star architecture logical rings are set up on ...