Balancing Performance and Device Complexity in Single‐Point Miniaturized Spectrometers via Multi‐Peak Modulation Strategies

Abstract

ABSTRACT Balancing resolution, complexity, bandwidth, power, and scalability is essential for advancing single‐point miniaturized spectrometers from lab prototypes to practical portable and integrated photonic systems. In this paper, we present a high‐performance two‐terminal asymmetric back‐to‐back organic spectrometer (BTBOS) that utilizes a bias‐controlled multi‐peak modulation strategy to mitigate the ill‐posed inverse problem common in single‐point architectures. The device achieves a 1 nm spectral resolution across the broad 300–1000 nm range, with a ∼0.25 nm peak error and <2% spectral crosstalk, using only a low driving voltage of 0.6 V. The device further features a structurally simple design along with remarkable stability and reproducibility. In addition, we demonstrate its practical applicability in spectral imaging. This scalable and energy‐efficient approach paves the way for practical and commercial use of miniaturized spectrometers in wearable and on‐chip optical systems.