Microwave photonic filter (MPF) is one of the key fundamental subsystems in microwave photonics, and it shows great potentiality numbers applications such as optoelectronic oscillator, frequency measurement, so forth. A narrowband bandpass MPF highly desirable with its high selectivity applications. However, a resonator quality factor (>10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> ) very difficult to fabricate on mature silicon...

An optical phased array (OPA), the most promising non-mechanical beam steering technique, has great potential for solid-state light detection and ranging systems, holographic imaging, free-space communications. A high quality with low sidelobes is crucial long-distance transmission detection. However, previously reported OPAs suffer from sidelobe levels, few efforts are devoted to reducing levels in both azimuthal ( φ ) polar θ directions. To solve this issue, we propose a...

Silicon photonic integrated circuits (PICs) show great potential for many applications. The phase tuning technique is indispensable and of importance in silicon PICs. An optical shifter with balanced overall performance on power consumption, insertion loss, footprint, modulation bandwidth essential harnessing large-scale photonics. However, few proposed schemes various platforms have achieved a well-balanced performance. In this Letter, we experimentally demonstrate thermo-optic based...

Abstract Integrated optical phased array (OPA) is evolving into a transformational technology for LiDAR and free‐space communication systems due to its distinctive qualities of compact size, rapid scanning, low cost. When the integrated OPA utilized long‐range vehicle (300 m range), large emission aperture (mm‐cm length) required. However, typically necessitates thousands phase‐controlled emitters consumes tens watts when utilizing traditional thermo‐optic phase shifters. Here, an...

We propose and experimentally demonstrate an on-chip switchable polarization beam splitter (PBS) using silicon waveguides. To the best of our knowledge, it is first demonstration PBS that not only able to split beams but can be tuned allow these switch output paths. The design based on a directional coupler. Measurements show extinction ratios >12 dB in both initial state switched state, which realized by heating device up 57°C. By adding switching ability PBS, this work expected benefit...

We propose and experimentally demonstrate an energy-efficient optical diode based on the optomechanical effect. The signals could transmit during forward propagation while be blocked backward propagation. When launching signal with a low power of 4.0 mW, maximum resonance red-shift asymmetric silicon microring resonator (MRR) up to 0.74 nm, in this case, forward-backward nonreciprocal transmission ratio (NTR) 12.7 dB has been achieved. 10-dB 5-dB operation bandwidths are 0.08 nm 0.24...

We propose and experimentally demonstrate photonic measurement of microwave frequency by utilizing an optomechanical microring resonator (MRR). The pump powers injected into the MRR would result resonance red-shifts based on nonlinear effects. In case optical single sideband modulation, intervals between carrier corresponding are tunable. Then filters with tunable central could be achieved. Through using two filter responses different frequencies, amplitude comparison function (ACF) (i.e.,...

We propose and demonstrate an approach to generating large time-bandwidth product (TBWP) frequency-hopping (FH) microwave waveforms by using ultra-high-quality factor (Q) silicon microring resonator (MRR) with thermal tuning. An ultra-high-Q MRR (Q ~ 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> ) is used filter out expected frequency component from optical comb. Heterodyne beating between the filtered another seed light detected a...

Abstract This paper considers an outsourced supply chain comprising a contract manufacturer (CM), original equipment (OEM) and online platform. In addition to providing manufacturing services the OEM, CM enters market using customer‐to‐manufacturer (C2M) strategy. Two baseline models four encroachment with different selling modes are modeled explore interaction among encroachment, C2M We find that will always encroach if brand substitution is sufficiently high. However, still despite being...

Temporal cloaks have aroused tremendous research interest in both optical physics and communications, unfolding a distinct approach to conceal temporal events from an interrogating field. The state-of-the-art exhibit picosecond-scale static cloaking window, owing significantly limited periodicity aperture of time lens. Here we demonstrate field-programmable silicon cloak for hiding nanosecond-level events, enabled by integrated microring broadband frequency comb. With dynamic control the...

Service-oriented smart manufacturing, which allows customers to engage in the product lifecycle process, has become more and popular. In this paper, we investigate win-win strategies for manufacturer customer when they co-create a product. We consider three scenarios model: have same initiatives co-creation, higher initiative co-creation than customer, lower customer. find that both gain lowest benefits co-creation. The results also indicate quality increment effectiveness consumer is...

Germanium photodiodes integrated via selective epitaxial growth typically have low detectivity. We demonstrate process approaches that are needed to minimize defectivity in germanium, thereby paving way towards with dark current and high

We experimentally demonstrate a tunable sub-gigahertz bandwidth microwave photonic bandpass filter based on silicon microring resonator. A 170 MHz full width at half maximum is achieved owing to utilize an ultra-high-Q as 1.14×106 of the The corresponding rejection ratio 26.5 dB. central frequency could be tuned from 2.0 GHz 18.4 GHz.

We demonstrate a six-port circuit to obtain ordered-route light transmission by exploiting thermo-optic effect in micro-rings. theoretically analyzed the scalability and experimentally proved working region tunability of device.

We introduce and experimentally demonstrate a flexible temporal illusion at telecommunication data rate in optical fiber communication system. The cannot only transform an event to another as expected, but also mask the with high-level signal, providing novel method conceal confidential information. successfully output waveforms of return-to-zero (RZ), dark RZ nonreturn-to-zero (NRZ) into that any above modulation format signal different bits mosaic 5 Gb/s, respectively. Our works offer us...

We propose and experimentally demonstrate a temporal cloak with the new capability not only to conceal pseudorandom inverted return-to-zero optical data (cloaking mode), but also create "illusion" for observer at telecommunication rate (romanticizing mode).

Microwave photonic systems have huge potential for both existing and future applications, including radar, radiofrequency sensing modern wireless communications due to their distinct advantages in terms of ultra-wide bandwidth, flexible tunability, immunity electromagnetic interference. There is a strong research trend microwave towards integration miniaturization, resulting multiple radio frequency functions on single chip which compact light weight. Thus integrated photonics has attracted...

We experimentally demonstrate a thermo-optic phase shifter based on densely distributed silicon spiral waveguide, with power consumption, insertion loss, footprint and modulation bandwidth of 3 mW/π, 0.9 dB, 28×67 μm 2 39 kHz respectively.

We experimentally demonstrated an integrated 120-channel silicon optical phased array with Gaussian power distribution on both horizontal and vertical directions to achieve high sidelobe suppression ratios (15 dB 25 dB, respectively).

We experimentally demonstrate a compact silicon optical phase shifter based on thermo-optic effect. The loss, power consumption, modulation bandwidth, and footprint are 0.77 dB, 3.1 mW/ π , 38 kHz, 45 × µm 2 respectively.

We experimentally demonstrate a six-port passive circuit supporting all-optical ordered-route transmission using thermo-optic effect. The 15-dB bandwidth (BW) is larger than 0.05 nm and the maximum blocking extinction ratio (BER) 39 dB.