A simple method for measurement of chromatic dispersion of optical fiber by using bi-directional modulation of a Mach-Zehnder modulator

2003 ◽  
Author(s):  
Keum-Soo Jeon ◽  
Hee-Ju Kim ◽  
Dong-Sung Kang ◽  
Jae-Kyung Pan
Keyword(s):  
Optical Fiber ◽  
Chromatic Dispersion ◽  
Simple Method ◽  
Mach Zehnder Modulator ◽  
Directional Modulation

scholarly journals Design and validation of fiber optic localized surface plasmon resonance sensor for thyroglobulin immunoassay with high sensitivity and rapid detection

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hyeong-Min Kim ◽  
Dae Hong Jeong ◽  
Ho-Young Lee ◽  
Jae-Hyoung Park ◽  
Seung-Ki Lee
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Localized Surface Plasmon ◽  
Simple Method ◽  
Resonance Sensor

AbstractA simple optical fiber sensor based on localized surface plasmon resonance was constructed for direct and rapid measurement of thyroglobulin (Tg). Specific tests for Tg in patients that have undergone thyroidectomy are limited because of insufficient sensitivity, complicated procedures, and in some cases, a long time to yield a result. A sensitive, fast, and simple method is necessary to relieve the psychological and physical burden of the patient. Various concentrations of Tg were measured in a microfluidic channel using an optical fiber sensor with gold nanoparticles. The sensor chip has a detection limit of 93.11 fg/mL with no specificity for other antigens. The potential applicability of the Tg sensing system was evaluated using arbitrary samples containing specific concentrations of Tg. Finally, the sensor can be employed to detect Tg in the patient’s serum, with a good correlation when compared with the commercial kit.

Efficient Chromatic Dispersion Compensation and Carrier Phase Tracking for Optical Fiber FBMC/OQAM Systems

2017 ◽  
Vol 35 (14) ◽  
pp. 2909-2916 ◽  
Author(s):  
Trung-Hien Nguyen ◽  
Francois Rottenberg ◽  
Simon-Pierre Gorza ◽  
Jerome Louveaux ◽  
Francois Horlin
Keyword(s):  
Optical Fiber ◽  
Carrier Phase ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Phase Tracking ◽  
Carrier Phase Tracking

Chromatic dispersion and PMD measurements of optical fiber

2010 ◽  
Author(s):  
Shafkat B. Yanyshev ◽  
Irshat H. Galeev ◽  
Irina L. Vinogradova ◽  
Aleksey N. Garifinov ◽  
Aydar I. Salikhov ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Chromatic Dispersion

scholarly journals Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1245
Author(s):  
Bárbara R. Gomes ◽  
Rui Araújo ◽  
Tatiana Sousa ◽  
Rita B. Figueira
Keyword(s):  
Optical Fiber ◽  
Sol Gel ◽  
Concrete Structures ◽  
Optical Fiber Sensors ◽  
Rational Approach ◽  
Simple Method ◽  
Fiber Sensors ◽  
Chemical Reagents ◽  
Current State ◽  
Gel Membranes

The use of advanced sensing devices for concrete and reinforced concrete structures (RCS) is considered a rational approach for the assessment of repair options and scheduling of inspection and maintenance strategies. The immediate benefits are cost reduction and a reliable prevention of unpredictable events. The use of optical fiber sensors (OFS) for such purposes has increased considerably in the last few years due to their intrinsic advantages. In most of the OFS, the chemical transducer consists of immobilized chemical reagents placed in the sensing region of the optical sensor by direct deposition or by encapsulation in a polymeric matrix. The choice of the support matrix impacts directly on the performance of the OFS. In the last two decades, the development of OFS functionalized with organic–inorganic hybrid (OIH) sol–gel membranes have been reported. Sol–gel route is considered a simple method that offers several advantages when compared to traditional synthesis processes, allowing to obtain versatile materials with unique chemical and physical properties, and is particularly valuable in the design of OIH materials. This review will provide an update of the current state-of-the-art of the OFS based on OIH sol-gel materials for concrete and RCS since 2016 until mid-2021. The main achievements in the synthesis of OIH membranes for deposition on OFS will be discussed. The challenges and future directions in this field will also be considered, as well as the main limitations of OFS for RCS monitoring.

Generation of Frequency 12-Tupling Millimeter-Wave Using one DPMZM to Overcome Chromatic Dispersion

2015 ◽  
Vol 713-715 ◽  
pp. 1184-1187
Author(s):  
Dong Liang ◽  
Qing Gui Tan ◽  
Wei Jiang ◽  
Xiao Jun Li ◽  
Zhong Bo Zhu
Keyword(s):  
Millimeter Wave ◽  
Chromatic Dispersion ◽  
Wave Generation ◽  
Time Shift ◽  
Power Penalty ◽  
Eye Diagram ◽  
Baseband Signal ◽  
Mach Zehnder Modulator ◽  
Theoretical Analyses

In this paper, a approach for frequency 12-tupling millimeter-wave generation using one DPMZM (Dual-Parallel Mach-Zehnder Modulator) to overcome chromatic dispersion is demonstrated. The millimeter-wave with the baseband signal carried only by minus 6-th order sideband is generated by properly adjusting a series of parameters. As the signal transmittes along the fiber, there is no time shift caused by chromatic dispersion. Theoretical analyses and simulated results show that when the optical mm-wave carrying 2.5Gbps baseband signal transmits over 55 Km, the eye diagram still keeps open and clear. The power penalty is about 0.7 dB after transmits over 40 Km.

HIGHLY ACCURATE WAVELENGTH SCANNED FOUR-WAVE MIXING EXPERIMENT IN AN OPTICAL FIBER AND DEMONSTRATION OF RETRIEVAL OF ITS LINEAR AND NONLINEAR OPTICAL PARAMETERS

2006 ◽  
Vol 15 (01) ◽  
pp. 141-156
Author(s):  
S. J. JUNG ◽  
J. Y. LEE ◽  
D. Y. KIM
Keyword(s):  
Optical Fiber ◽  
Nonlinear Optical ◽  
Chromatic Dispersion ◽  
Tunable Laser ◽  
Four Wave Mixing ◽  
Optical Parameters ◽  
Wave Mixing ◽  
Dependent Change ◽  
Measurement Results ◽  
Linear And Nonlinear

Accurate wavelength scanned four-wave mixing (FWM) measurement results in an optical fiber are presented with two tunable laser sources near the dispersion-zero wavelength of the fiber. By comparing the measured FWM data with a simple analytic expression, we have demonstrated that important linear and nonlinear optical properties such as zero-dispersion wavelength, dispersion slope and nonlinear refractive index of the sample fiber. Highly accurate and repeatable measurement results for a sample fiber are presented. Temperature-dependent change in the chromatic dispersion of a fiber is also investigated.

Sign in / Sign up

Export Citation Format

Share Document