We show a thermally stable self-injection DFB laser lock to a microring resonator system, increasing the range of temperature for which a laser stays within 100 MHz of the target frequency by a factor of 100. By including amplification in the feedback loop, the per-laser power dedicated to this locking was reduced. We further added a 2.2 km fiber spool to explore the remote locking performance of the system.
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http://dx.doi.org/10.1364/OE.515269 | DOI Listing |
Large-scale quantum photonic circuits require integrating multiple single-photon sources, which are typically based on spontaneous four-wave mixing (SFWM) in spiral waveguides or microring resonators (MRRs). Photons can be generated in both clockwise (CW) and counterclockwise (CCW) orientations from a single source in a Sagnac configuration, showing promise for improving scalability. In this work, we propose a fully integrable scheme for bidirectional creation and usage of single photons.
View Article and Find Full Text PDFFiber Bragg grating (FBG) accelerometers are extensively utilized across various industries. For a high-performance FBG accelerometer interrogator, achieving low cost, wide range, multi-channel capability, high precision, and high-speed demodulation is critical. This paper proposes a chip-level wavelength demodulation method for FBG accelerometers utilizing a cascaded micro-ring resonator (MRR) array.
View Article and Find Full Text PDFNanomaterials (Basel)
January 2025
State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China.
The integration of a photodetector that converts optical signals into electrical signals is essential for scalable integrated lithium niobate photonics. Two-dimensional materials provide a potential high-efficiency on-chip detection capability. Here, we demonstrate an efficient on-chip photodetector based on a few layers of MoTe on a thin film lithium niobate waveguide and integrate it with a microresonator operating in an optical telecommunication band.
View Article and Find Full Text PDFSci Rep
January 2025
Departemant of Physics and Energy Engineering, Amirkabir University of Technology, Tehran, Iran.
With careful design and integration, microring resonators can serve as a promising foundation for developing compact and scalable sources of non-classical light for quantum information processing. However, the current design flow is hindered by computational challenges and a complex, high-dimensional parameter space with interdependent variables. In this work, we present a knowledge-integrated machine learning framework based on Bayesian Optimization for designing squeezed light sources using microring resonators.
View Article and Find Full Text PDFLight Sci Appl
January 2025
Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.
The burgeoning volume of parameters in artificial neural network models has posed substantial challenges to conventional tensor computing hardware. Benefiting from the available optical multidimensional information entropy, optical intelligent computing is used as an alternative solution to address the emerging challenges of electrical computing. These limitations, in terms of device size and photonic integration scale, have hindered the performance of optical chips.
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