Optisense Technologies


Strict Standards: Non-static method mosCache::getCache() should not be called statically in /home/optiqua/optisense.nl/includes/frontend.php on line 133

Strict Standards: Non-static method modules_html::module2() should not be called statically in /home/optiqua/optisense.nl/includes/frontend.php on line 166

Strict Standards: Non-static method modules_html::modoutput_rounded() should not be called statically in /home/optiqua/optisense.nl/includes/frontend.html.php on line 107

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/optiqua/optisense.nl/includes/phpInputFilter/class.inputfilter.php on line 457

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/optiqua/optisense.nl/includes/phpInputFilter/class.inputfilter.php on line 459

Deprecated: Function eregi() is deprecated in /home/optiqua/optisense.nl/includes/pathway.php on line 280

Deprecated: Function eregi() is deprecated in /home/optiqua/optisense.nl/includes/pathway.php on line 313

Deprecated: Function eregi() is deprecated in /home/optiqua/optisense.nl/includes/sef.php on line 393
Home arrow Technology

Strict Standards: Non-static method mosMainFrame::sessionCookieName() should not be called statically in /home/optiqua/optisense.nl/includes/frontend.php on line 34
Technology

 

Refractive index as the new monitoring standard

 

Optiqua's patented optical chip is based on an integrated version of the Mach-Zehnder Interferometer (MZI). This is a highly sensitive sensor for Refractive Index ("RI") changes. Refractive index is a useful generic indicator of water quality as any substance, when dissolved in water, will change the refractive index of the water matrix in proportion to its own RI as well as its concentration. The generic Optiqua sensor chip operates at a sensitivity level equivalent to parts per million (ppm) levels for any chemical contaminant.


The relationship between the refractive index and the concentration of a contaminant is linear. The Optiqua sensor accurately measures changes in refractive index in the order of magnitude of 10-7 RI, which corresponds to low ppm level concentrations for most chemicals. This makes it an extremely useful parameter for detection and monitoring purpose. In combination with assays, as used in the MiniLab, analyte detection of specific substances down to the low ppb levels is possible.

 

 

Optiqua Cleanroom

 

 

Patented Innovations

 

Optiqua's patented optical sensor technology is based on an integrated version of Mach-Zehnder Interferometer (MZI). The basic layout of the MZI consists of an input channel wave-guide (#1 in figure below) that splits into two identical branches (#3), a sensing branch exposed to the water sample (#4) and a reference branch, and are then combined again to form the output wave-guide. The MZI works as an optical scale, measuring minute differences in refractive index as seen by the sensing branch versus the reference branch.

 

 

MZI Chip

 

Patented light path architecture:
  • Netherlands, Patent number NL 1006323 C2
  • Europe, Patent number EP 0990184 B1
  • USA, Patent number US 6618536 B1
  • Japan, Patent number JP 3562651 B2
  • Other patents pending