An Optical fiber Bragg grating sensor interrogation device based on monolithically integrated echelle diffractive grating and detector arrays on an InP chip is designed and prototyped. The device weighs less than 60 g and measures smaller than 45 mm × 30 mm × 15 mm, and it is specifically designed for potential integration into aerospace applications. This study discusses this device's operation principle and presents some initial experimental results reflecting its performance.

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Journal Microwave and Optical Technology Letters
Albert, J, Xaio, G., Sun, F., Zhang, Z., Lu, Z., Liu, J., … Mrad, N. (2007). Miniaturized optical fiber Bragg grating sensor interrogator based on echelle diffractive gratings. Microwave and Optical Technology Letters, 49(3), 668–671. doi:10.1002/mop.22236