Five-channel polymer waveguide wavelength division demultiplexer for the near infrared

1991 ◽  
Vol 3 (1) ◽  
pp. 36-38 ◽  
Author(s):  
M.R. Wang ◽  
G.J. Sonek ◽  
R.T. Chen ◽  
T. Jannson
Keyword(s):  
Near Infrared ◽  
Wavelength Division ◽  
Polymer Waveguide

Performance Evaluation of Bidirectional Wavelength Division Multiple Access Broadband Optical Passive Elastic Networks Operation Efficiency

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
S. Sivaranjani ◽  
A. Sampathkumar ◽  
Ahmed Nabih Zaki Rashed ◽  
T.V.P. Sundararajan ◽  
Iraj S. Amiri
Keyword(s):  
Performance Evaluation ◽  
Optical Networks ◽  
Multiple Access ◽  
Near Infrared ◽  
Error Rates ◽  
Sequence Length ◽  
Wavelength Division ◽  
Elastic Networks ◽  
Operation Efficiency ◽  
Upstream Direction

AbstractThe study has outlined the performance evaluation of bidirectional wavelength division multiple access broadband optical passive elastic networks operation efficiency. Signal power level, Q coefficient parameter, and minimum data error rates are measured numerically in both downstream and upstream directions based on broadband passive optical networks (BPONs). The transmission data rate available in the downstream direction is 10 Gb/s, while its value in the upstream direction is 2 Gb/s. The suitable operating wavelength is selected in the near-infrared region around 1550 nm for minimum losses. The bits sequence length of the optical transmitter is taken in to account for testing the optical network performance efficiency. The proposed model has presented better performance than the previous model by 25.76 % in downstream direction and by 12.28 % in upstream direction. As well as the bidirectional wavelength division multiple access broadband passive optical elastic networks performance efficiency is measured.

scholarly journals Near-infrared tunable lasers with polymer waveguide Bragg gratings

2012 ◽  
Vol 20 (2) ◽  
pp. 827 ◽  
Author(s):  
Nam-Seon Son ◽  
Kyung-Jo Kim ◽  
Jun-Whee Kim ◽  
Min-Cheol Oh
Keyword(s):  
Near Infrared ◽  
Bragg Gratings ◽  
Tunable Lasers ◽  
Polymer Waveguide

Graphene oxide-polymethylmethacrylate polymer waveguide device based on near infrared fingerprint spectrum for refractive index sensing

2017 ◽  
Vol 40 (8) ◽  
pp. 2607-2610
Author(s):  
Botao Wang ◽  
Qi Wang ◽  
Lingxin Kong ◽  
Riqing Lv
Keyword(s):  
Refractive Index ◽  
Graphene Oxide ◽  
Near Infrared ◽  
High Sensitivity ◽  
Single Mode ◽  
Glycerol Solution ◽  
Refractive Index Measurement ◽  
Polymer Waveguide ◽  
Refractive Index Sensing ◽  
High Measurement

A graphene oxide-polymethylmethacrylate (GO-PMMA) microfiber sensor is proposed and experimentally demonstrated in this paper, which is based on the absorption principle of near infrared spectra for external refractive index sensing. The sensor was fabricated by splicing a section of 1 mm GO-PMMA between two tapered single mode fibers. The hydrophilic groups of graphene oxide can be used to measure the proportion of water in glycerol solution, and achieve the goal of refractive index measurement indirectly. Experiments were conducted for moisture content of 4.3%~45% (refractive index range from 1.3400 to 1.4054) in glycerin solution. Different concentrations of glycerol solution have different intensities of absorption peaks near 1530 nm wavelength. The absorption peak power near 1530 nm wavelength responses to the external refractive index was experimentally studied. The results show that the sensor possesses a high sensitivity of 167.39 dB/RIU in the refractive index range of 1.34~1.41 and has a good linearity response to external refractive index. The proposed sensor is attractive owing to its high measurement speed, accurate, no pollution and lower cost, and is suited for long-term online real-time measurement.

scholarly journals Bragg-Grating-Based Photonic Strain and Temperature Sensor Foils Realized Using Imprinting and Operating at Very Near Infrared Wavelengths

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2717 ◽  
Author(s):  
Jeroen Missinne ◽  
Nuria Teigell Benéitez ◽  
Marie-Aline Mattelin ◽  
Alfredo Lamberti ◽  
Geert Luyckx ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Strain Gage ◽  
Electromagnetic Interference ◽  
Near Infrared ◽  
Single Mode ◽  
Bragg Grating ◽  
Cross Sectional ◽  
Polymer Waveguide ◽  
Optical Strain ◽  
Planar Approach

Thin and flexible sensor foils are very suitable for unobtrusive integration with mechanical structures and allow monitoring for example strain and temperature while minimally interfering with the operation of those structures. Electrical strain gages have long been used for this purpose, but optical strain sensors based on Bragg gratings are gaining importance because of their improved accuracy, insusceptibility to electromagnetic interference, and multiplexing capability, thereby drastically reducing the amount of interconnection cables required. This paper reports on thin polymer sensor foils that can be used as photonic strain gage or temperature sensors, using several Bragg grating sensors multiplexed in a single polymer waveguide. Compared to commercially available optical fibers with Bragg grating sensors, our planar approach allows fabricating multiple, closely spaced sensors in well-defined directions in the same plane realizing photonic strain gage rosettes. While most of the reported Bragg grating sensors operate around a wavelength of 1550 nm, the sensors in the current paper operate around a wavelength of 850 nm, where the material losses are the lowest. This was accomplished by imprinting gratings with pitches 280 nm, 285 nm, and 290 nm at the core-cladding interface of an imprinted single mode waveguide with cross-sectional dimensions 3 × 3 µm2. We show that it is possible to realize high-quality imprinted single mode waveguides, with gratings, having only a very thin residual layer which is important to limit bend losses or cross-talk with neighboring waveguides. The strain and temperature sensitivity of the Bragg grating sensors was found to be 0.85 pm/µε and −150 pm/°C, respectively. These values correspond well with those of previously reported sensors based on the same materials but operating around 1550 nm, taking into account that sensitivity scales with the wavelength.

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