We experimentally demonstrate a 16 × non-blocking optical switch fabric with footprint of 10.7 4.4 mm2. The is composed 56 2 silicon Mach-Zehnder interferometers (MZIs), each integrated pair TiN resistive micro-heaters and p-i-n diode. average on-chip insertion loss at 1560 nm wavelength ~6.7 dB ~14 for the "all-cross" "all-bar" states, respectively, variation ± 1 over all routing paths. measured rise/fall time upon electrical tuning 3.2/2.5 ns. switching functionality verified by...

In this paper, the authors propose a magneto-optical tunable filter based on long-period fiber grating (LPG) coated with magnetic fluids (MFs) as ambient media. By applying field, center wavelength shift of attenuation band LPG is found large 7.4nm. The refractive index dependence MF external intensity measured and simulation results show that it well agreeable experimental observations.

We propose a miniature optical intensity modulator based on silicon-polymer-metal hybrid plasmonic waveguide. Benefiting from the high mode confinement of waveguide and linear electro-optic effect polymer material, is ultra-compact with length only ~ 13 μm. The device optimized using numerical simulations finite element method (FEM). exhibits large modulation bandwidth 90 GHz, depth 12 dB at 6 V, low power consumption 24.3 fJ/bit.

We propose a compact 1-mm-radius microring resonator sensor based on hybrid plasmonic waveguide silicon-on-insulator substrate. The is composed of metal-gap-silicon structure, where the optical energy greatly enhanced in narrow gap. use finite element method to numerically analyze device characteristics as biochemical sensor. As field micoring has large overlap with upper-cladding sensing medium, sensitivity very high compared other dielectric sensors. compactness resulted from balance...

We experimentally demonstrate tunable silicon comb filters based on Fabry-Perot (FP) resonators composed of two Sagnac loop mirrors. The filter resolves up to 54 lines with a 115 GHz channel spacing over spectral range from 1510 1560 nm. line extinction ratio is ~26.3 dB and the quality factor ~57,000 around 1550 nm wavelength. Electrical tuning enabled via periodically interleaved PN junctions embedded inside FP resonator. are blue shifted by ~0.92 (one spacing) 5 mA forward-bias current...

We propose an integrated two-dimensional beam-steering device based on on-chip silicon-nitride switch/emitter structure and off-chip lens for light detection ranging (Lidar) application at 1550 nm. In this device, is guided by a 1 × 16 switch to one grating emitter in 4 grating-emitter array. The beam from the collimated steered fixed lens. By changing that emits light, different angle can be achieved. A divergence of 0.06° field view 2.07° 4.12° far are has O(log2N) power consumption N...

We present a reflective-type optical delay line using waveguide side-coupled 13 microring resonators terminated with sagnac loop reflector. Light passes through the resonator sequence twice, doubling delay-bandwidth product. Group is tuned by p-i-p type microheaters integrated directly in waveguides. Experiment demonstrates that can potentially buffer 18 bits and be continuously for 100 ps power tuning efficiency of 0.34 ps/mW. Eye diagrams 20-Gbps PRBS signal after 10 110 delays are also examined.

We propose and experimentally demonstrate a low-power 2×2 silicon electro-optic (EO) switch consisting of double-ring assisted Mach-Zehnder interferometer (DR-MZI). Active tuning elements based on p-i-n diodes resistive micro-heaters are embedded in the microrings for high-speed EO switching low-loss thermo-optic (TO) tuning, respectively. The transmission spectrum shows device can perform 60 GHz spectral window with crosstalk less than -20 dB. After phase error correction 2.31 mW TO power,...

We present the experimental demonstration of a 4 × silicon electro-optic (EO) switch fabric based on Benes architecture. Double-ring-assisted Mach-Zehnder interferometers (DR-MZIs) are utilized as basic elements. Silicon resistive microheaters and p-i-n diodes embedded in both microrings DR-MZIs for low-loss thermo-optic (TO) phase correction high-speed switching operation, respectively. The TO tuning power dissipated to align all resonances is 22.37 mW. maximum EO required only 1.38 average...

We demonstrate a blind zone-suppressed and flash-emitting solid-state Lidar based on lens-assisted beam-steering technology. As proof-of-concept demonstration, with the design of subwavelength-gap 1D long-emitter array multiwavelength flash beam emitting, device was measured to have 5% zone suppression, 0.06°/point-deflection step, 4.2 μs scanning speed. In time-of-flight ranging experiments, systems field view <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"...

A plasmonic-hybrid-waveguide-based optical phase modulator is proposed and analyzed. The field enhancement in the low-index high-nonlinear polymer layer provides nanoscale confinement a fast modulation speed. At 2.5 V drive voltage, π shift can be obtained for 13-μm-long plasmonic waveguide. Because of its small capacitance parasitic resistance, bandwidth reach up to 100 GHz with low power consumption ∼9 fJ/bit. waveguide connected silicon wire via an adiabatic taper coupling efficiency...

We report tunable two-stage self-coupled optical waveguide (SCOW) resonators composed of a pair mirror-imaged single SCOW connected by phase shifter in between. Experimental results show that the coupled-resonator-induced-transparency and high-order bandstop filtering characteristics can be obtained transmission spectra devices with two different configurations. The resonance spectrum tuned using either p-i-p microheater or p-i-n diode shifter. Our theoretical modeling based on transfer...

We present a compact silicon polarization rotator (PR) based on mode-hybridization by breaking the cross-sectional symmetry of double-stair waveguide. The device fabrication is fully compatible with commonly used photonics processes no extra masks required. dependence performance waveguide dimensions investigated using FDTD simulations. Characterizations fabricated devices reveal that 23-μm-long PR exhibits extinction ratio (PER) >17 dB in wavelength range 1500-1540 nm. maximum PER exceeds 30 at 1518

We report a temperature-insensitive microdisplacement sensor with locally bent microfiber taper interferometer. The waist diameter can be optimized to minimize the spectral shift of owing environmental temperature change. With ~ 1.92-μm-diameter taper, bimodal fiber interferometer is proposed and experimentally fabricated. transmission spectrum shows substantially small dependence matching well theoretical estimation. red-shifted in response high sensitivity 102 pm/μm but without requirement...

We demonstrate integrated basic photonic components and Bragg gratings using 60-nm-thick silicon-on-insulator strip waveguides. The ultra-thin waveguides exhibit a propagation loss of 0.61 dB/cm bending approximately 0.015 dB/180° with 30 μm radius (including two straight-bend waveguide junctions). Basic structures based on the waveguides, including micro-ring resonators, 1 × 2 MMI couplers, Mach-Zehnder interferometers are realized. Upon thinning-down, effective refractive index is reduced,...

We present an equivalent circuit model for a silicon carrier-depletion single-drive push–pull Mach–Zehnder modulator (MZM) with its traveling wave electrode made of coplanar strip lines. In particular, the partial-capacitance technique and conformal mapping are used to derive capacitance associated each layer. The PN junction is accurately modeled fringe capacitances taken into consideration. validated by comparing calculations simulation results. Using this model, we analyze effect several...

We characterize the modulation linearity of a silicon Mach-Zehnder modulator with single-drive push-pull configuration. The 3-dB electro-optic bandwidths are 15 and 32 GHz at 0 6 V reverse biases, respectively. best spurious-free dynamic ranges (SFDRs) for second-order harmonic distortion third-order intermodulation measured to be 97.7 dB·Hz <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2/3</sup> 85.9...

We report a broadband 4 × nonblocking optical switch with Mach-Zehnder interferometers (MZIs) as elements on silicon platform. Silicon resistive heaters are used for phase error correction of MZI arms total thermooptic power consumption 33.7 mW. Fast switching is enabled by p-i-n diodes, average electrooptic tuning 14.3 mW the 24 essential states required routing. The on-chip insertion loss 5.8-7.7 dB and crosstalk better than -12 at wavelength 1550 nm. Optical transmission experiments using...

The two-way fiber-optic time transfer based on bidirectional time-division multiplexing transmission over a single fiber with the same wavelength (BTDM-SFSW) is an effective way to eliminate effect of Rayleigh backscattering and reach maximum symmetry at time. In this paper, BTDM-SFSW-based testbed built employment loop configuration in laboratory evaluate performance thousands kilometers, which confronted worse signal-to-noise ratio (SNR), more serious dispersion, so on. contributions...

We report a high-linearity wideband dual–parallel silicon Mach–Zehnder modulator (MZM). This consists of two carrier-depletion-based MZMs with single-drive push–pull traveling wave electrode configuration. An analytic model is established to investigate the linearity property modulator. The measurement results show can effectively suppress third-order harmonics and intermodulation distortions, improved modulation linearity, compared single MZM.

In this paper, a simple approach to generate the time-wavelength interleaved sampling clock for photonic A/D converters is proposed using commercially available mode-locked femtosecond fiber laser and optical wavelength/time division multiplexing (WDM/OTDM) techniques with low cost passive components. A time wavelength mapping module configured specially designed multiplexer mechanical tunable stretchers. OTDM modules insertion loss flexibly configurable multiple factor are implemented...

We present a CMOS-compatible athermal tunable silicon optical lattice filter composed of 10 cascaded 2 × asymmetric Mach-Zehnder interferometers. Active tuning experiments show that the central wavelength can be red-/blue-shifted by 13.1/21.3 nm with power consumption 77/96 mW on top/bottom arms. Temperature shift measurements thermal-sensitivity before active is as low -1.465 pm/°C. The varied within 26.5 pm/°C to -27.1 when tuned in range 1534 1551 nm. use transfer matrix method...

We demonstrate a monolithic frequency-modulated continuous-wave (FMCW) lidar chip with an integrated transceiver array based on lens-assisted beam steering (LABS) technology. It enables emitting, steering, receiving, and coherent detecting single simultaneous distance velocity detection. An is designed composite structure of Bragg grating in the middle U-shaped photodetector (PD) surrounding it. For proof-of-concept demonstration, 2 × switchable fabricated. A LABS system scanning angle 2.86°...

We experimentally demonstrate a silicon 4 × nonblocking thermo-optic (TO) switch using generalized Mach-Zehnder interferometer constructed on multimode interferometers. All the 24 switching states for are characterized. The device fabricated CMOS technologies has footprint of 2.8 0.65 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . measured average on-chip insertion loss is 9 ± 2 dB and crosstalk all better than -12 dB. TO power...

In this paper, a novel robust, compact, and flexible neural-network model for fiber Raman amplifier (FRA) is presented. The can be used in various applications with promising accuracy low requirement memory. Analytical expressions are derived order to make the optimal pump-power configuration much easier, computational time reduced dramatically comparison other gain-design methods real-time adjustment. calculated on-off gain spectrum noise figure using proposed agree well experimental...