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The purpose of this presentation is to discuss photonics technologies' role in enabling electronic warfare (EW) capabilities. Photonics technologies are primed to be a disruptive technology, and are ripe for an S-curve jump in the near-term. Closely monitoring emerging technologies in this domain will provide those with the core-competency to effectuate a strategic technological advantage over their...
Inspired by mechanical gearboxes, we introduce an optical analog implementation of the gearbox as a means to overcome the mismatch between the ultrahigh speed of optical data and the much slower sampling rate of electronic digitizers and processors.
The advantages of using the broadband and low-loss distribution attributes of photonics to enhance the sensing capabilities of microwave systems are well known(1). In this talk, we review the salient features of photonics that allow them to make unique contributions towards ultra-wideband signal processing. A key component used in the RF-photonic links of these applications is the electro-optic modulator...
The next generation of telecommunication satellites operating in the Ku and Ka bands consider radio over optical fiber (RoF) technologies as a good candidate for the future flexible payloads. In this context we have started a 3U nanosatellite dedicated to the qualification of an erbium doped fiber by using an optoelectronic metrology technique. This educational project called NIMPH (Nanosatellite...
Sandia National Laboratories has developed a toolkit of RF photonic devices. These devices have been used in the development of multielement RF photonic circuits and in support of MPW runs. In this talk I will discuss Sandia's silicon photonic process and RF photonic device performance.
This talk will focus on recent work done at Sandia National Laboratories in compound semiconductor integrated photonics relevant to avionics. Two technologies will be presented: Sandia's InP-based photonic integrated circuit platform which enables highly functional circuits and advanced heterogenous integration for microscale photovoltaic systems.
Record high SFDR operation is achieved for heterogeneously integrated silicon photonics modulators, by using hybrid III-V/Si phase modulators within Si MZI modulator structures. 112 dB.Hz2/3 SFDR is achieved at 10 GHz with standard MZI modulators, and 117.5 dB.Hz2/3 for Ring Assisted MZI (RAMZI) modulators.
Analog performance of compact thin-film lithium niobate Mach-Zehnder modulators on silicon substrates is investigated. The 8-mm-long modulators present 3.1 V.cm half-wave voltage length product, 18 dB extinction ratio, and are characterized up to 20 GHz, with 95 dBHz2/3 spur-free dynamic range up to 4 GHz.
Modern aircraft utilize electrical connections and signals for transport of all flight-critical information. Traditionally, all avionic subsystems were connected using point-to-point duplex links, which increase the weight and complexity of the aircraft wiring, as well as complicate upgrades with new systems and services. More recently, networking technologies like Avionics Full-Duplex Switched Ethernet...
We demonstrate compact silicon photonic arrayed waveguide gratings with channel spacing down to 1 GHz using active phase correction. The relative phase of each path within the device is directly measured using an interferometer, and two methods of phase optimization are implemented and compared.
A rapid evolution in military sensor and system design is currently underway. Photonics techniques have the potential to play a critical role in these future systems due to their unique capabilities. These emerging trends and the potential for photonics to support them will be discussed.
We developed a fiber-optic-loop based system that replicates a single RF input pulse to produce thousands of signal pairs in time domain for auto-correlation processing. A new noise redistribution feature improved the system signal-to-noise performance which allows high resolution spectral analysis for a single signal-pulse.
We proposed and validated experimentally four advanced principles for circuit optimization of long-term fiber-optic analog RF memory: distributed structure of low-power emitters based on dense wavelength division multiplexing, multicore optical fiber as retarding medium, two-stage processing including optoelectronic repeater unit, and optical recirculation time-delay circuit.
We propose a humidity sensing technique based on a periodically micro-tapered long-period fiber grating incorporating low index polymer and polyvinyl alcohol (PVA). We effectively suppress sensing uncertainty for measurement of the relative humidity.
Photonic components have yet to match the power handling, dynamic range, and form factor of RF designs. Comprehensive comparison requires consideration of system-wide performance. Analysis of recent advances in the context of modern electronic warfare system requirements shows photonics-based architectures to be a promising solution.
Ultra-wideband Radio Frequency (RF) receiver is in great demand for military and civilian applications, such as radar system, electronic warfare, navigation and identification functions, however, the traditional analog-component-based receivers are vulnerable to electromagnetic interference (EMI) and are limited by their ability to cover broad spectrum [1]. Offering a large instantaneous bandwidth,...
A novel technique to create a lossless tunable RF-photonic filter with ultra-high suppression is experimentally demonstrated. Through precise amplitude and phase tailoring, the filter achieved minimum insertion loss (0dB) and maximum isolation (> 50dB) simultaneously with wide tuning of frequency (0–12GHz) and bandwidth (100–220MHz).
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