A Single-Chip Integrated Spectrometer via Tunable Microring Resonator Array

Zheng, Shaonan; Cai, Hong; Song, Jun; Zou, Jun; Liu, Patricia Yang; Lin, Zhiping; Kwong, Dim‐Lee; Liu, Ai Qun

doi:10.1109/jphot.2019.2939580

Cited by 33 publications

(30 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On‐chip spectroscopy is of great interest due to its prevalence in both scientific research and technology applications. [ 1–4 ] Currently, rapid development of footprint shrinking is available for microspectrometer chips through the instrumentality of sophisticated light splitting techniques [ 5–9 ] such as quantum dot filters [ 10 ] or photonic structures. [ 11–14 ] In such devices, the primary shortcoming lies in key sensor performance metrics, including sensitivity and resolution, scale inversely with the effective optical path length, and light–matter interaction volume.…”

Section: Introductionmentioning

confidence: 99%

On‐Chip Measurement of Photoluminescence with High Sensitivity Monolithic Spectrometer

Zheng

Wang

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

Monolithic spectrometer is exceptionally attractive to enable compact, low‐cost spectroscopy for portable sensing and lab‐on‐a‐chip functionality. Unfortunately, simple down‐scaling of the microspectrometer size to the chip‐scale severely weakens light–matter interactions and degrades the sensor performance to unacceptable level. Unlike other state‐of‐the‐art miniature spectral splitting filters or photonic structures, bandgap‐graded nanowire strongly enhances the light‐matter interaction, which is a highly demanded yet unfulfilled feature for high‐precision on‐chip sensing. Here, on‐chip measurement of photoluminescence by a monolithic spectrometer made of a single composition‐graded CdSxSe1–x nanowire is reported. The nanowire is engineered to a waveguide‐mode‐operated, dispersive photodiode array. It works as a monolithic spectrometer chip with strong light–matter interaction and superior noise figure. On‐chip measurement of single‐point photoluminescence signals with 1013 Jones room‐temperature detectivity and 5 nm spectral resolution is illustrated. This demonstration of a compact, low‐cost, and high‐performance miniature spectrometer marks a major step towards on‐chip spectroscopy for fine resolution and sensitive detection.

show abstract

Section: Introductionmentioning

confidence: 99%

On‐Chip Measurement of Photoluminescence with High Sensitivity Monolithic Spectrometer

Zheng

Wang

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…d Cascaded Bragg gratings based spectrometer 80 . e Spectrometer composed of both AWG and ring resonators 81 . a Reprinted from ref.…”

Section: Technological Analysis Of Integrated Spectrometersmentioning

confidence: 99%

“…Recently, the combination of a AWG and ring resonators was demonstrated for 0.1 nm resolution and 25.4 nm bandwidth with only 9 channels as shown in Fig. 9e , which is significantly reduced compared to a conventional AWG that would require 254 channels 81 .…”

Section: Technological Analysis Of Integrated Spectrometersmentioning

confidence: 99%

Advances in cost-effective integrated spectrometers

et al. 2022

View full text Add to dashboard Cite

The proliferation of Internet-of-Things has promoted a wide variety of emerging applications that require compact, lightweight, and low-cost optical spectrometers. While substantial progresses have been made in the miniaturization of spectrometers, most of them are with a major focus on the technical side but tend to feature a lower technology readiness level for manufacturability. More importantly, in spite of the advancement in miniaturized spectrometers, their performance and the metrics of real-life applications have seldomly been connected but are highly important. This review paper shows the market trend for chip-scale spectrometers and analyzes the key metrics that are required to adopt miniaturized spectrometers in real-life applications. Recent progress addressing the challenges of miniaturization of spectrometers is summarized, paying a special attention to the CMOS-compatible fabrication platform that shows a clear pathway to massive production. Insights for ways forward are also presented.

show abstract

“…One of the most significant current researches in spectrometer is about spectrometers based on planar integrated optical waveguide technology with various structures, such as arrayed waveguide gratings (AWGs) [1], echelle gratings [2], microring resonators (MRR) [3] and waveguide Fourier-transform (FT) spectrometers [4][5]. Among them, the traditional spectrometers with splitting light such as AWG and EDG have been researched for a long time.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the traditional spectrometers with splitting light such as AWG and EDG have been researched for a long time. In our previous work, we proposed and demonstrated an integrated spectrometer with high resolution and wide bandwidth based on the cascaded AWG and tunable microring resonator array [4]. However, the microring from each channel need to be tuning, which is very time-consuming.…”

Section: Introductionmentioning

confidence: 99%