Chip-scale demonstration of hybrid III–V/silicon photonic integration for an FBG interrogator
Posted on 2017-06-28 - 21:06
Silicon photonic integration is a means to produce an integrated on-chip fiber Bragg grating (FBG) interrogator. The possibility of integrating the light source, couplers, grating couplers, de-multiplexers, photodetectors (PDs), and other optical elements of the FBG interrogator into one chip may result in game-changing performance advances, considerable energy savings, and significant cost reductions. To the best of our knowledge, this paper is the first to present a hybrid silicon photonic chip based on III–V/silicon-on-insulator photonic integration for an FBG interrogator. The hybrid silicon photonic chip consists of a multiwavelength vertical-cavity surface-emitting laser array and input grating couplers, a multimode interference coupler, an arrayed waveguide grating, output grating couplers, and a PD array. The chip can serve as an FBG interrogator on a chip and offer unprecedented opportunities. With a footprint of 5 mm×3 mm, the proposed hybrid silicon photonic chip achieves an interrogation wavelength resolution of approximately 1 pm and a wavelength accuracy of about ±10 pm. With the measured 1 pm wavelength resolution, the temperature measurement resolution of the proposed chip is approximately 0.1°C. The proposed hybrid silicon photonic chip possesses advantages in terms of cost, manufacturability, miniaturization, and performance. The chip supports applications that require extreme miniaturization down to the level of smart grains.
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Li, Hongqiang; Ma, Xiangdong; Cui, Beibei; Wang, Youxi; Zhang, Cheng; Zhao, Junfa; et al. (2017). Chip-scale demonstration of hybrid III–V/silicon photonic integration for an FBG interrogator. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3813643.v1
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AUTHORS (9)
HL
Hongqiang Li
XM
Xiangdong Ma
BC
Beibei Cui
YW
Youxi Wang
CZ
Cheng Zhang
JZ
Junfa Zhao
ZZ
Zanyun Zhang
CT
Chunxiao Tang
EL
Enbang Li
KEYWORDS
input grating couplersFBG interrogator Silicon photonic integrationoutput grating couplers1 pm wavelength resolutionmultiwavelength vertical-cavity surface-emitting laser arraygame-changing performance advancesFBG interrogatormultimode interference couplerPDinterrogation wavelength resolutionon-chip fiber Bragg gratingtemperature measurement resolutionIIIsilicon photonic chip