scholarly journals Interband Cascade Photonic Integrated Circuits on Native III-V Chip

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 599
Author(s):  
Jerry R. Meyer ◽  
Chul Soo Kim ◽  
Mijin Kim ◽  
Chadwick L. Canedy ◽  
Charles D. Merritt ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Detection System ◽  
Laser Cavity ◽  
Building Blocks ◽  
Drive Power ◽  
Optical Elements ◽  
Photonic Integrated Circuit ◽  
Cleaved Facets ◽  
On Chip

We describe how a midwave infrared photonic integrated circuit (PIC) that combines lasers, detectors, passive waveguides, and other optical elements may be constructed on the native GaSb substrate of an interband cascade laser (ICL) structure. The active and passive building blocks may be used, for example, to fabricate an on-chip chemical detection system with a passive sensing waveguide that evanescently couples to an ambient sample gas. A variety of highly compact architectures are described, some of which incorporate both the sensing waveguide and detector into a laser cavity defined by two high-reflectivity cleaved facets. We also describe an edge-emitting laser configuration that optimizes stability by minimizing parasitic feedback from external optical elements, and which can potentially operate with lower drive power than any mid-IR laser now available. While ICL-based PICs processed on GaSb serve to illustrate the various configurations, many of the proposed concepts apply equally to quantum-cascade-laser (QCL)-based PICs processed on InP, and PICs that integrate III-V lasers and detectors on silicon. With mature processing, it should become possible to mass-produce hundreds of individual PICs on the same chip which, when singulated, will realize chemical sensing by an extremely compact and inexpensive package.

scholarly journals Organic printed photonics: From microring lasers to integrated circuits

2015 ◽  
Vol 1 (8) ◽  
pp. e1500257 ◽  
Author(s):  
Chuang Zhang ◽  
Chang-Ling Zou ◽  
Yan Zhao ◽  
Chun-Hua Dong ◽  
Cong Wei ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Flexible Electronics ◽  
Integrated Circuit ◽  
Large Scale ◽  
Rapid Development ◽  
Light Signal ◽  
Photonic Integrated Circuit ◽  
Printing Technique ◽  
On Chip ◽  
Silicon Based

A photonic integrated circuit (PIC) is the optical analogy of an electronic loop in which photons are signal carriers with high transport speed and parallel processing capability. Besides the most frequently demonstrated silicon-based circuits, PICs require a variety of materials for light generation, processing, modulation, and detection. With their diversity and flexibility, organic molecular materials provide an alternative platform for photonics; however, the versatile fabrication of organic integrated circuits with the desired photonic performance remains a big challenge. The rapid development of flexible electronics has shown that a solution printing technique has considerable potential for the large-scale fabrication and integration of microsized/nanosized devices. We propose the idea of soft photonics and demonstrate the function-directed fabrication of high-quality organic photonic devices and circuits. We prepared size-tunable and reproducible polymer microring resonators on a wafer-scale transparent and flexible chip using a solution printing technique. The printed optical resonator showed a quality (Q) factor higher than 4 × 105, which is comparable to that of silicon-based resonators. The high material compatibility of this printed photonic chip enabled us to realize low-threshold microlasers by doping organic functional molecules into a typical photonic device. On an identical chip, this construction strategy allowed us to design a complex assembly of one-dimensional waveguide and resonator components for light signal filtering and optical storage toward the large-scale on-chip integration of microscopic photonic units. Thus, we have developed a scheme for soft photonic integration that may motivate further studies on organic photonic materials and devices.

A WDM receiver photonic integrated circuit with net on-chip gain

1994 ◽  
Vol 6 (8) ◽  
pp. 960-962 ◽  
Author(s):  
J.-M. Verdiell ◽  
T.L. Koch ◽  
B.I. Miller ◽  
M.E. Young ◽  
U. Koren ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Photonic Integrated Circuit ◽  
On Chip

Silicon photonic integrated circuit for on-chip spectroscopic gas sensing

2019 ◽  
Author(s):  
Chi Xiong ◽  
Yves Martin ◽  
Eric J. Zhang ◽  
Jason S. Orcutt ◽  
Martin Glodde ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Gas Sensing ◽  
Photonic Integrated Circuit ◽  
Silicon Photonic ◽  
On Chip

scholarly journals A Comparison between off and On-Chip Injection Locking in a Photonic Integrated Circuit

Photonics ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 103 ◽  
Author(s):  
Alison Perrott ◽  
Ludovic Caro ◽  
Mohamad Dernaika ◽  
Frank Peters
Keyword(s):  
Integrated Circuit ◽  
High Speed ◽  
Power Spectra ◽  
Dynamical Behaviour ◽  
Injection Locking ◽  
Semiconductor Diode ◽  
Photonic Integrated Circuit ◽  
Semiconductor Diode Laser ◽  
Spectrum Analyser ◽  
On Chip

The mutual and injection locking characteristics of two integrated lasers are compared, both on and off-chip. In this study, two integrated single facet slotted Fabry–Pérot lasers are utilised to develop the measurement technique used to examine the different operational regimes arising from optically locking a semiconductor diode laser. The technique employed used an optical spectrum analyser (OSA), an electrical spectrum analyser (ESA) and a high speed oscilloscope (HSO). The wavelengths of the lasers are measured on the OSA and the selected optical mode for locking is identified. The region of injection locking and various other regions of dynamical behaviour between the lasers are observed on the ESA. The time trace information of the system is obtained from the HSO and performing the FFT (Fast Fourier Transform) of the time traces returns the power spectra. Using these tools, the similarities and differences between off-chip injection locking with an isolator, and on-chip mutual locking are examined.

scholarly journals Maximum Temperature Detection System for Integrated Circuits

2015 ◽  
Vol 66 (2) ◽  
pp. 79-84
Author(s):  
Maciej Frankiewicz ◽  
Andrzej Kos
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Detection System ◽  
Absolute Temperature ◽  
Maximum Temperature ◽  
Dynamic Frequency Scaling ◽  
Temperature Detection ◽  
Measurement Results ◽  
Power Management System ◽  
Dynamic Frequency

Abstract The paper describes structure and measurement results of the system detecting present maximum temperature on the surface of an integrated circuit. The system consists of the set of proportional to absolute temperature sensors, temperature processing path and a digital part designed in VHDL. Analogue parts of the circuit where designed with full-custom technique. The system is a part of temperature-controlled oscillator circuit - a power management system based on dynamic frequency scaling method. The oscillator cooperates with microprocessor dedicated for thermal experiments. The whole system is implemented in UMC CMOS 0.18 μm (1.8 V) technology.

scholarly journals Modern Types of Axicons: New Functions and Applications

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6690
Author(s):  
Svetlana N. Khonina ◽  
Nikolay L. Kazanskiy ◽  
Pavel A. Khorin ◽  
Muhammad A. Butt
Keyword(s):  
Intensity Distribution ◽  
Integrated Circuit ◽  
Bessel Beam ◽  
Optical Element ◽  
Spatial Light Modulators ◽  
Optical Antennas ◽  
Optical Elements ◽  
Photonic Integrated Circuit ◽  
Light Modulators

Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-power laser radiation schemes. Nevertheless, it has drawbacks such as the produced beam’s parameters being dependent on a particular element, the output beam’s intensity distribution being dependent on the quality of element manufacturing, and uneven axial intensity distribution. To address these issues, extensive research has been undertaken to develop nondiffracting beams using a variety of advanced techniques. We looked at four different and special approaches for creating nondiffracting beams in this article. Diffractive axicons, meta-axicons-flat optics, spatial light modulators, and photonic integrated circuit-based axicons are among these approaches. Lately, there has been noteworthy curiosity in reducing the thickness and weight of axicons by exploiting diffraction. Meta-axicons, which are ultrathin flat optical elements made up of metasurfaces built up of arrays of subwavelength optical antennas, are one way to address such needs. In addition, when compared to their traditional refractive and diffractive equivalents, meta-axicons have a number of distinguishing advantages, including aberration correction, active tunability, and semi-transparency. This paper is not intended to be a critique of any method. We have outlined the most recent advancements in this field and let readers determine which approach best meets their needs based on the ease of fabrication and utilization. Moreover, one section is devoted to applications of axicons utilized as sensors of optical properties of devices and elements as well as singular beams states and wavefront features.

scholarly journals Passivity Preserving Model Order Reduction Using the Reduce Norm Method

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 964
Author(s):  
Namra Akram ◽  
Mehboob Alam ◽  
Rashida Hussain ◽  
Asghar Ali ◽  
Shah Muhammad ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Model Order Reduction ◽  
High Speed ◽  
Order Reduction ◽  
Reliable Operation ◽  
Model Order ◽  
Reduced Order ◽  
Reduction Methods ◽  
On Chip

Modeling and design of on-chip interconnect, the interconnection between the components is becoming the fundamental roadblock in achieving high-speed integrated circuits. The scaling of interconnect in nanometer regime had shifted the paradime from device-dominated to interconnect-dominated design methodology. Driven by the expanding complexity of on-chip interconnects, a passivity preserving model order reduction (MOR) is essential for designing and estimating the performance for reliable operation of the integrated circuit. In this work, we developed a new frequency selective reduce norm spectral zero (RNSZ) projection method, which dynamically selects interpolation points using spectral zeros of the system. The proposed reduce-norm scheme can guarantee stability and passivity, while creating the reduced models, which are fairly accurate across selected narrow range of frequencies. The reduced order results indicate preservation of passivity and greater accuracy than the other model order reduction methods.

scholarly journals Picosecond optical pulse processing using a terahertz-bandwidth reconfigurable photonic integrated circuit

Nanophotonics ◽  
2018 ◽  
Vol 7 (5) ◽  
pp. 837-852 ◽  
Author(s):  
Yiwei Xie ◽  
Leimeng Zhuang ◽  
Arthur J. Lowery
Keyword(s):  
Signal Processing ◽  
Integrated Circuit ◽  
Building Blocks ◽  
Optical Signal ◽  
Optical Pulses ◽  
Photonic Integrated Circuit ◽  
Waveform Generation ◽  
Wide Range ◽  
Arbitrary Waveform ◽  
Signal Processors

AbstractChip-scale integrated optical signal processors promise to support a multitude of signal processing functions with bandwidths beyond the limit of microelectronics. Previous research has made great contributions in terms of demonstrating processing functions and device building blocks. Currently, there is a significant interest in providing functional reconfigurability, to match a key advantage of programmable microelectronic processors. To advance this concept, in this work, we experimentally demonstrate a photonic integrated circuit as an optical signal processor with an unprecedented combination of two key features: reconfigurability and terahertz bandwidth. These features enable a variety of processing functions on picosecond optical pulses using a single device. In the experiment, we successfully verified clock rate multiplication, arbitrary waveform generation, discretely and continuously tunable delays, multi-path combining and bit-pattern recognition for 1.2-ps-duration optical pulses at 1550 nm. These results and selected head-to-head comparisons with commercially available devices show our device to be a flexible integrated platform for ultrahigh-bandwidth optical signal processing and point toward a wide range of applications for telecommunications and beyond.

scholarly journals On-chip nanophotonic broadband wavelength detector with 2D-Electron gas

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Vishal Kaushik ◽  
Swati Rajput ◽  
Sulabh Srivastav ◽  
Lalit Singh ◽  
Prem Babu ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Detection System ◽  
Low Cost ◽  
Electron Gas ◽  
Fabrication Process ◽  
Novel Approach ◽  
Efficient Alternative ◽  
Wavelength Detector ◽  
On Chip ◽  
Wavelength Detection

Abstract Miniaturized, low-cost wavelength detectors are gaining enormous interest as we step into the new age of photonics. Incompatibility with integrated circuits or complex fabrication requirement in most of the conventionally used filters necessitates the development of a simple, on-chip platform for easy-to-use wavelength detection system. Also, intensity fluctuations hinder precise, noise free detection of spectral information. Here we propose a novel approach of utilizing wavelength sensitive photocurrent across semiconductor heterojunctions to experimentally validate broadband wavelength detection on an on-chip platform with simple fabrication process. The proposed device utilizes linear frequency response of internal photoemission via 2-D electron gas in a ZnO based heterojunction along with a reference junction for coherent common mode rejection. We report sensitivity of 0.96 μA/nm for a broad wavelength-range of 280 nm from 660 to 940 nm. Simple fabrication process, efficient intensity noise cancelation along with heat resistance and radiation hardness of ZnO makes the proposed platform simple, low-cost and efficient alternative for several applications such as optical spectrometers, sensing, and Internet of Things (IOTs).

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