scholarly journals Integrated Optic Sensing Spectrometer: Concept and Design

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1018 ◽  
Author(s):  
Gloria Micó ◽  
Bernardo Gargallo ◽  
Daniel Pastor ◽  
Pascual Muñoz
Keyword(s):  
Near Infrared ◽  
The Other ◽  
Spectrometric Analysis ◽  
Focal Points ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Integrated Optical ◽  
Infrared Wavelengths ◽  
Arrayed Waveguide

In this paper the concept and design of an integrated optical device featuring evanescent field sensing and spectrometric analysis is presented. The device, termed integrated optics sensing spectrometer (IOSS), consists of a modified arrayed waveguide grating (AWG) which arms are engineered into two sets having different focal points. Half of the arms are exposed to the outer media, while the other half are left isolated, thus the device can provide both sensing and reference spectra. Two reference designs are provided for the visible and near-infrared wavelengths, aimed at the determination of the concentration of known solutes through absorption spectroscopy.

scholarly journals Optimal Design of an Ultrasmall SOI-Based 1 × 8 Flat-Top AWG by Using an MMI

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Hongqiang Li ◽  
Yaoting Bai ◽  
Xiaye Dong ◽  
Enbang Li ◽  
Yang Li ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Spectral Response ◽  
Beam Propagation Method ◽  
Silicon On Insulator ◽  
Optimized Design ◽  
Arrayed Waveguide Grating ◽  
Channel Spacing ◽  
Waveguide Grating ◽  
Passband Width ◽  
Arrayed Waveguide

Four methods based on a multimode interference (MMI) structure are optimally designed to flatten the spectral response of silicon-on-insulator- (SOI-) based arrayed-waveguide grating (AWG) applied in a demodulation integration microsystem. In the design for each method, SOI is selected as the material, the beam propagation method is used, and the performances (including the 3 dB passband width, the crosstalk, and the insertion loss) of the flat-top AWG are studied. Moreover, the output spectrum responses of AWGs with or without a flattened structure are compared. The results show that low insertion loss, crosstalk, and a flat and efficient spectral response are simultaneously achieved for each kind of structure. By comparing the four designs, the design that combines a tapered MMI with tapered input/output waveguides, which has not been previously reported, was shown to yield better results than others. The optimized design reduced crosstalk to approximately −21.9 dB and had an insertion loss of −4.36 dB and a 3 dB passband width, that is, approximately 65% of the channel spacing.

A Wavelength Interleaved DWDM ROF System with 60GHz Optical OFDM Signal

2011 ◽  
Vol 130-134 ◽  
pp. 2245-2248
Author(s):  
Yong Hong Ma ◽  
Chong Xiang Zhang ◽  
Pan Zhang
Keyword(s):  
High Speed ◽  
Radio Over Fiber ◽  
Experimental Results ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Access System ◽  
Ofdm Signal ◽  
The Future ◽  
Optical Ofdm ◽  
Arrayed Waveguide

we demonstrate a wavelength interleaved DWDM Radio-over-Fiber (ROF) system for providing 1-Gb/s OFDM signal in downlink and 1-Gb/s OOK data in uplink simultaneously. In this scheme, we use only one arrayed waveguide grating device at the remote node to realize both the de-multiplexing and multiplexing functions. The experimental results demonstrate that this scheme is feasible to the future broadband high-speed OFDM-ROF access system.

A polymeric optical switch array based on arrayed waveguide grating structure

2007 ◽  
Vol 279 (1) ◽  
pp. 79-82 ◽  
Author(s):  
Guohua Hu ◽  
Yiping Cui ◽  
Binfeng Yun ◽  
Changgui Lu ◽  
Zhuyuan Wang
Keyword(s):  
Optical Switch ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Grating Structure ◽  
Arrayed Waveguide

Super-high- athermal arrayed waveguide grating with resin-filled trenches in slab region

2004 ◽  
Vol 40 (6) ◽  
pp. 374 ◽  
Author(s):  
K. Maru ◽  
K. Matsui ◽  
H. Ishikawa ◽  
Y. Abe ◽  
S. Kashimura ◽  
...  
Keyword(s):  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Arrayed Waveguide
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