BAĞCI, Fulya Ankara Üniversitesi - Mühendislik Fakültesi - Fizik Mühendisliği Bölümü, Türkiye , TEZCAN, Seda Ankara Üniversitesi - Mühendislik Fakültesi - Fizik Mühendisliği Bölümü, Türkiye , AKAOĞLU, Barış Ankara Üniversitesi - Mühendislik Fakültesi - Fizik Mühendisliği Bölümü, Türkiye

ENHANCEMENT OF SENSITIVITY OF PHOTONIC CRYSTAL BASED TEMPERATURE SENSOR

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A temperature sensor is proposed in the computational environment using triangular lattice GaAs photonic crystal structure and the sensitivity of the sensor is enhanced by employing structural improvements around the cavity and by using slow light feature. By creating a point defect one row ahead from the photonic crystal waveguide, light in the cavity resonance frequencies is coupled to this point defect and the change of the resonance frequency related to the temperature is investigated. The radius of the holes around the cavity and the cavity area are changed to enhance the sensitivity. 0.1001 nm/ºC sensitivity of the temperature sensor is increased by 1.4%±0.1% with structural optimizations. Light is slowed down by 14 times in a 20.23 nm range including the cavity resonance wavelength by changing the radius of the first rows of holes surrounding the waveguide and shifting them in a direction parallel to the waveguide. The sensitivity of the sensor is increased by 2.8%±0.1% as a result of increasing optical overlap of the mode with the cavity by slow light effect.

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Sensor , Photonic crystal , Photonic crystal waveguide , Slow light

Pamukkale University Journal Of Engineering Sciences

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