Journal
LASER & PHOTONICS REVIEWS
Volume 7, Issue 6, Pages 1027-1035Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201300080
Keywords
Organic-Inorganic hybrids; optically active materials; photonics; photoluminescence; photonic-on-a-chip device
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Funding
- FundacAo para a Ciencia e a Tecnologia (FCT), FEDER, COMPETE, [PEst-C/CTM/LA0013/2013, PTDC/CTM/101324/2008, SFRH/BPD/34365/2006, SRFH/BPD/87473/2012, SFRH/BPD/89003/2012]
- CAPES (Brazil funding agency)
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/89003/2012, SFRH/BPD/34365/2006, PTDC/CTM/101324/2008] Funding Source: FCT
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An integrated photonic-on-a-chip device based on a single organic-inorganic di-ureasil hybrid was fabricated for optical waveguide and temperature sensing. The device is composed by a thermal actuated Mach-Zehnder (MZ) interferometer operating with a switching power of 0.011 W and a maximum temperature difference between branches of 0.89 oC. The MZ interferometer is covered by a Eu3+/Tb3+ co-doped di-ureasil luminescent molecular thermometer with a temperature uncertainty of 0.1oC and a spatial resolution of 13 mu m. This is an uncommon example in which the same material (an organic-inorganic hybrid) that is used to fabricate a particular device (a thermal-actuated MZ interferometer) is also used to measure one of the device intrinsic properties (the operating temperature). The photonic-on-a-chip example discussed here can be applied to sense temperature gradients with high resolution (10(-3) oC mu m(-1)) in chip-scale heat engines or refrigerators, magnetic nanocontacts and energy-harvesting machines.
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