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A 25.78-Gbit/s × 4-ch active optical cable (AOC) with a ultra-compact form factor is proposed. The size of the proposed AOC is 5.2 cm3, which is 45-% smaller than standard form factor of a μQSFP. By utilizing a high heat-dissipation structure, the proposed AOC demonstrated 25.78-Gbit/s error-free optical transmission under all-channels (4-ch) operation at case temperature (Tc) of 70 °C.
We report a fiber optic vibration sensor developed from a Fiber Bragg Grating (FBG) sensor. Three FBG vibration sensors are constructed and subjected to drop test, vibration test and mock train-railway positioning test. All the Bragg wavelengths of the sensors, as well as the Fast Fourier Transform (FFT) graphs are recorded by a computer via an FBG interrogator. Two commercial FBG vibration sensors...
A new high-speed 1300nm directly modulated DFB laser with high power has been demonstrated. With low parasitic capacitance of coplanar electrodes, 25mW has been obtained in a long waveguide, while maintaining high-speed performance. 50Gb/s PAM-4 modulation over 35km transmission without amplification has been realized with low degradation.
We review the recent research outputs at Monash Electro-Photonics Laboratory in a new field: electro-photonics, where the best of the electronic and photonic technologies are combined to increase the capacity, flexibility and energy efficiency of optical communications systems and networks.
We report about the design, fabrication and properties of wavelength division multiplex module with large core multimode optical polymer waveguides. The module is assembled from multimode planar optical 1×2 Y splitter embedded with multilayered dielectric filters and connected with large core plastic fibers. The splitter was designed by beam propagation method using BeamPROP software for connecting...
To facilitate large-capacity wireless access with low cost and compact size, the broadband optical multi-Tx & multi-Rx module is developed by integrating multiple directly modulated lasers (DMLs) for the radio-over-fiber system. Under the WDM mode, the optical module can support multiple channels carrying heterogeneous traffics for both low-mobility and high-mobility scenarios. Through a 10-km...
We report fabrication and characterization of a liquid crystal core waveguide (LCW) at 1550 nm wavelength. The fabricated LCW consists of a guiding nematic liquid crystal layer of 5CB, surrounded by thin cladding layers of the polymer AZ15nXT, which are sandwiched between two ITO-coated glass plates. The threshold voltage and extinction ratio of the LCW are measured to be ≈ 4.0 V and > 6 dB, respectively,...
A cladding-modulated 1D photonic crystal is realized for creating ultra-large dispersion on a silicon chip. Design, fabrication, and characterization of the devices are demonstrated. The device exploits adjacent pillars' positioning to engineer the group delay dispersion (GDD). Devices achieving GDD values of −3.61 ps/nm and 3.28 ps/nm and GDD × bandwidth product of 72 ps are demonstrated on a footprint...
Nano-particle rotation above a plasmonic gold trimer nano-structure with a nano-gap has been demonstrated. We designed the plasmonic trimer nano-structure which has a resonant frequency matched to excitation and made it with electron beam lithography with a metal lift-off process. At first, with an actively rotating linearly polarized beam excitation, we have realized a rotational motion of a trapped...
We demonstrate a single-drive parallel-push-pull silicon optical modulator. When optically biased at the quadrature point, the device has an extinction ratio of 3.1 dB at the speed of 20 Gbps and under the driving voltage of 1.8 Vpp.
We propose and experimentally demonstrate a reconfigurable photonic RF differentiator based on a Kerr frequency comb generated in an integrated nonlinear microring resonator. The RF magnitude and phase responses are experimentally characterized. Systems demonstrations for Gaussian input signals are also performed.
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