A Robust Method for Characterization of Optical Waveguides and Couplers

Tran, Minh A.; Komljenović, Tin; Hulme, Jared; Davenport, Michael; Bowers, John E.

doi:10.1109/lpt.2016.2556713

Cited by 29 publications

(10 citation statements)

References 9 publications

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“…The propagation loss was derived both from the backscattering of spiral waveguides (width 1.0

m) obtained via OFDR and the transmission spectrum of MZIs [ 53 ]. The spiral waveguide test structures are shown in the top panel of Figure 5 , comprising lengths of 1 cm (bottom) and 1 + 2 cm (top).…”

Section: Silicon Nitride Platform With 300 Nm Film Heightmentioning

confidence: 99%

“…A microscope picture of the MZI test structure is shown in Figure 5 . Following the procedure described in [ 53 ], the four transmission spectra for the MZI were acquired by using a broadband Amplified Spontaneous Emission (ASE) source and an Optical Spectrum Analyzer (OSA). The propagation loss derived was in the range of 1.2–1.6 dB/cm.…”

Section: Silicon Nitride Platform With 300 Nm Film Heightmentioning

confidence: 99%

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Silicon Nitride Photonic Integration Platforms for Visible, Near-Infrared and Mid-Infrared Applications

Muñoz

Micó

Bru

et al. 2017

Sensors

241

156

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Silicon nitride photonics is on the rise owing to the broadband nature of the material, allowing applications of biophotonics, tele/datacom, optical signal processing and sensing, from visible, through near to mid-infrared wavelengths. In this paper, a review of the state of the art of silicon nitride strip waveguide platforms is provided, alongside the experimental results on the development of a versatile 300 nm guiding film height silicon nitride platform.

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“…The propagation loss was derived both from the backscattering of spiral waveguides (width 1.0

Section: Silicon Nitride Platform With 300 Nm Film Heightmentioning

confidence: 99%

Section: Silicon Nitride Platform With 300 Nm Film Heightmentioning

confidence: 99%

Silicon Nitride Photonic Integration Platforms for Visible, Near-Infrared and Mid-Infrared Applications

Muñoz

Micó

Bru

et al. 2017

Sensors

241

156

View full text Add to dashboard Cite

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“…The adiabatic coupler is characterized using the method proposed in [50]. Such a method allows for fully characterizing the power coupling coefficients of the adiabatic couplers from the extinction ratio of the MZI spectra in the case of small FSR.…”

Section: B Device Characterizationmentioning

confidence: 99%

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Pintus

Huang

Morton

et al. 2019

J. Lightwave Technol.

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Optical isolators and circulators are fundamental building block in photonic integrated circuits to block undesired reflections and routing light according to a prescribed direction. In silicon photonics, heterogeneous integration of magneto-optic garnet bonded on a pre-patterned silicon layer has been demonstrated to be an effective solution for manufacturing optical isolators and circulators for TM polarized light. However, most integrated semiconductor lasers emit TE polarized light, which indicates the need to find a reliable solution for this polarization. In this work, we demonstrated broadband optical isolators and circulators for TE polarized light based on heterogeneous bonding on the silicon photonics platform. To achieve this goal, an integrated adiabatic coupler and a broadband polarization rotator are designed and optimized. The nonreciprocal behavior is induced through an energy-efficient integrated electromagnet with a minimum power consumption of 3 mW. Two isolators/circulators are fabricated with small and large free spectral range, respectively. In the former case, an optical isolation ratio as large as 30 dB is measured at 1555 nm with an insertion loss of 18 dB, while for the broadband circulator an optical isolation larger than 15 dB is guaranteed over more than 14 nm (1.75 THz) for all port-combinations with an insertion loss between 14 dB and 18dB at 1560 nm. Finally, it has been theoretically shown that the insertion loss can be reduced below 6 dB with design and fabrication improvements. To the best of the authors' knowledge, the proposed integrated TE optical circulator is the first experimental demonstration of this device in silicon photonics.

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“…Here, we focus on two variations of thermo-optically tunable unbalanced MZIs employing both DCs and MMIs. These devices were designed using the transfer matrix method 53 , where each component of the MZI can be represented by a matrix, two equivalent matrices for the 3-dB couplers, and a standalone matrix representing the path imbalance. Since many MZIs are required for a complete QPIC, the loss across each device must be minimized.…”

Section: Mach-zehnder Interferometers (Mmi and Dc)mentioning

confidence: 99%

“…We typically observe an ER above 10 dB across ≥ 100 nm bandwidth for through ports and ≥ 200 nm for cross ports, comparable to silicon MZIs 51,56 . With these ER measurements versus wavelength, the true coupling coefficient κ of each DC can be extracted 53 , as shown in Fig. 6d).…”

Section: Mach-zehnder Interferometers (Mmi and Dc)mentioning

confidence: 99%

Expanding the Quantum Photonic Toolbox in AlGaAsOI

Castro,

Steiner,

Thiel

et al. 2022

Preprint

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Aluminum gallium arsenide-on-insulator (AlGaAsOI) exhibits large χ (2) and χ (3) optical nonlinearities, a wide tunable bandgap, low waveguide propagation loss, and a large thermo-optic coefficient, making it an exciting platform for integrated quantum photonics. With ultrabright sources of quantum light established in AlGaAsOI, the next step is to develop the critical building blocks for chip-scale quantum photonic circuits. Here we expand the quantum photonic toolbox for AlGaAsOI by demonstrating edge couplers, 3-dB splitters, tunable interferometers, and waveguide crossings with performance comparable to or exceeding silicon and silicon-nitride quantum photonic platforms. As a demonstration, we demultiplex photonic qubits through an unbalanced interferometer, paving the route toward ultraefficient and high-rate chip-scale demonstrations of photonic quantum computation and information applications.

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A Robust Method for Characterization of Optical Waveguides and Couplers

Cited by 29 publications

References 9 publications

Silicon Nitride Photonic Integration Platforms for Visible, Near-Infrared and Mid-Infrared Applications

Silicon Nitride Photonic Integration Platforms for Visible, Near-Infrared and Mid-Infrared Applications

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Expanding the Quantum Photonic Toolbox in AlGaAsOI

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