Sequencing of long amplicons is one the major benefits Nanopore technologies, as it allows for reads much longer than Illumina. One challenges analysis these relatively high error rate. errors are generally corrected by consensus generation and polishing. This still a challenge mixed samples such metabarcoding environmental DNA, bulk amplicon PCR’s contaminated because sequence data would have ...

This work first considers a review of the dominant current methods for fibre Bragg grating wavelength interrogation. These methods include WDM interferometry, tunable filter (both Fabry-Perot and acousto-optic) demultiplexing, CCD/prism technique and a newer hybrid method utilizing Fabry-Perot and interferometric techniques. Two applications using these techniques are described: hull loads moni...

We experimentally demonstrate trapping and dropping of photons through localized cavity modes in three-dimensional layer-by-layer photonic crystal structures. By creating acceptorand donor-like cavities which are coupled to a highly confined waveguide ~HCW!, we drop selected frequencies from the waveguide mode. Tunability of the demultiplexing structures can be achieved by changing the properti...

Ultra-high speed OTDM networks require stable and compact all optical switches for demultiplexing and routing. In this paper we investigate the noise and crosstalk characteristics of all optical symmetric Mach-Zehnder (SMZ) switch using a numerical model. Two effects, the relative intensity noise (RIN) and channel crosstalk (CXT) that degrade the performance of the switch are investigated. Nume...

We demonstrate photodiodes in deposited polycrystalline silicon at 1550 nm wavelength with 0.15 A/W responsivity, 40 nA dark current, and gigahertz time response. Subband absorption is mediated by defects that are naturally present in the polycrystalline material structure. The material exhibits a moderate absorption coefficient of 6 dB/cm, which allows the same microring resonator device to ac...

All-optical switching by using a nondegenerate cascaded second-order nonlinearity is described wherein a phase shift is induced at one frequency owing to the presence of intense light at a different frequency. A Mach-Zehnder waveguide device is proposed to take advantage of this process and has applications for all-optical switching and demultiplexing, potentially at power levels near 10 W by u...