A waveguide loss measurement method based on the reflected interferometric pattern of a Fabry-Perot cavity

2018 ◽  
Author(s):  
Zhaosong Li ◽  
Dan Lu ◽  
Yiming He
Keyword(s):  
Measurement Method ◽  
Loss Measurement ◽  
Waveguide Loss ◽  
Fabry Perot

Nondestructive waveguide loss-measurement method using self-pumped phase conjugation for optimum end-fire coupling

1995 ◽  
Vol 20 (17) ◽  
pp. 1773 ◽  
Author(s):  
Simon Brülisauer ◽  
Daniel Fluck ◽  
Carlo Solcia ◽  
Tomas Pliska ◽  
Peter Günter
Keyword(s):  
Measurement Method ◽  
Phase Conjugation ◽  
Loss Measurement ◽  
Waveguide Loss

Modified Fabry-Perot interferometric method for waveguide loss measurement

2008 ◽  
Vol 47 (35) ◽  
pp. 6625 ◽  
Author(s):  
Sareh Taebi ◽  
Mohammadreza Khorasaninejad ◽  
Simarjeet Singh Saini
Keyword(s):  
Interferometric Method ◽  
Loss Measurement ◽  
Waveguide Loss ◽  
Fabry Perot

Waveguide loss measurement using photothermal deflection

1988 ◽  
Vol 27 (13) ◽  
pp. 2636 ◽  
Author(s):  
Robert K. Hickernell ◽  
Donald R. Larson ◽  
Robert J. Phelan ◽  
Lee E. Larson
Keyword(s):  
Loss Measurement ◽  
Waveguide Loss ◽  
Photothermal Deflection

scholarly journals Non-destructive residual pressure self-measurement method for the sensing chip of optical Fabry-Perot pressure sensor

2017 ◽  
Vol 25 (25) ◽  
pp. 31937 ◽  
Author(s):  
Xue Wang ◽  
Shuang Wang ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Xuezhi Zhang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Measurement Method ◽  
Residual Pressure ◽  
Fabry Perot ◽  
Non Destructive

Laser spectral linewidth dependence on waveguide loss measurements using the Fabry–Perot method

1994 ◽  
Vol 64 (5) ◽  
pp. 536-538 ◽  
Author(s):  
L. S. Yu ◽  
Q. Z. Liu ◽  
S. A. Pappert ◽  
P. K. L. Yu ◽  
S. S. Lau
Keyword(s):  
Waveguide Loss ◽  
Spectral Linewidth ◽  
Fabry Perot

scholarly journals Postpartum Blood Loss Measurement Using Digital Image Processing

2018 ◽  
Vol 73 ◽  
pp. 13023
Author(s):  
Siska Febrina Fauziah ◽  
Suryono Suryono ◽  
Melyana Nurul Widyawati
Keyword(s):  
Image Processing ◽  
Blood Loss ◽  
Blood Volume ◽  
Digital Image Processing ◽  
Digital Image ◽  
Measurement Method ◽  
Delivery Care ◽  
Loss Measurement ◽  
Postpartum Blood Loss ◽  
Image Area

Most of maternal mortality is directly caused by obstetric hemorrhage and almost three-quarters of it take place in postpartum period. The risk of maternal death due to hemorrhage can be reduced with prompt and proper care that in turn relates to the blood loss measurement method used. Unfortunately, the most commonly practiced method is not yet accurate enough. This research proposes a postpartum blood loss measurement method using digital image processing. Initially, characterization is carried out to find out blood absorbance against digital image area and blood volume in the underpad. Results of this characterization then serve as the basis for blood loss measurement using digital image processing. This measurement basis is validated by measuring blood volume lost during delivery care. Results show that the area and volume of blood absorbed in the underpad has significant linear relation (R = 0.9734). Digital image processing can be used to measure postpartum blood loss with a high accuracy up to 83.7%. The use of this method is therefore an accurate and objective alternative to the other available method. Nonetheless, the use of this new method must also adhere to standard guidelines in delivery care as to ensure the utmost outcomes.

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