Optical-spectrum-encoded analog-to-digital converter

Xiao-jun Liao; Ya-pei Yang

doi:10.1007/s11801-007-6157-5

Optoelectronics Letters ›› 2007, Vol. 3 ›› Issue (3) : 227-230. DOI: 10.1007/s11801-007-6157-5

Article

Optical-spectrum-encoded analog-to-digital converter

Xiao-jun Liao¹ ,
Ya-pei Yang¹

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Abstract

A novel optical-spectrum-encoded (OSE) analog-to-digital converter (ADC) is proposed in this letter. To simply exemplify the conversion idea, a 5-bit device structure consisted of Fabry-Perot interferometers (FPI) is analyzed and numerically simulated. The dependence of peak-transmission wavelength on modulation voltage in an electro-optical FPI and the dependence of transmitted power on incident light wavelength in an FPI are discussed and utilized to implement OSEADC. A linearly tunable mode-locked laser, as a voltage-wavelength transformer and a sampler, and chirped grating FPIs, as an encoder array, can be used to obtain much greater sampling rate and bit-resolution.

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Xiao-jun Liao, Ya-pei Yang. Optical-spectrum-encoded analog-to-digital converter. Optoelectronics Letters, 2007, 3(3): 227‒230 https://doi.org/10.1007/s11801-007-6157-5

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