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Frequency modulated external cavity laser with photonic crystal resonator and microheater

par Butler, Sharon S.M.;Bakoz, Andrei A.P.;Liles, Alexandros A.A.;Viktorov, Evgeny ;O'Faolain, Liam;Hegarty, Stephen
Référence Proceedings of SPIE - The International Society for Optical Engineering, 10682, 106822D
Publication Publié, 2018

Article révisé par les pairs

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Résumé :

We demonstrate frequency modulation (FM) in an external cavity III-V/Silicon laser, comprising a Reflective Semiconductor Optical Amplifier (RSOA) and an SU8 polymer waveguide vertically coupled to a 2D Silicon Photonic Crystal (PhC) cavity. Laser FM was achieved by local heating of the PhC using a resistive element of Ni-Cr metal as a microheater to change the refractive index in the cavity hence changing the lasing frequency. Presented is a thermal study of the laser dynamics and observations of the shift in lasing frequency.