AWG-Parameters: new software tool to design arrayed waveguide gratings

Seyringer, Dana; Bielik, M.

doi:10.1117/12.981439

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…8 1. polarization mode with 18 output channels was selected. Since the CWDM spectrum ranges from 1271 to 1611 nm, the channel central wavelength of the AWG is set to be at 1431 nm and the channel spacing is ∼2500 GHz.…”

Section: Awg Design Parametermentioning

confidence: 99%

Optimal design of linear tapered double S-shaped arrayed waveguide grating for broad channel spacing on silicon-on-insulator

Juhari¹,

Menon²,

Ehsan³

et al. 2014

Opt. Eng

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A linear tapered double S-shaped arrayed waveguide grating (AWG) was designed as an alternative to a U-shaped AWG, and a complete transmission spectrum for 18 channels of coarse wavelength-division multiplexing (CWDM) was demonstrated. The silicon-on-insulator based AWG with a rib waveguide structure with a broad channel spacing of 20 nm was designed to serve as a multiplexer/demultiplexer. A beam propagation method modeling simulation under transverse electric mode polarization over a free spectrum range of 700 nm was used for the design process. The geometrical dimensions of the AWG rib structure were optimized to achieve the lowest reported insertion loss of 1.07 dB and adjacent crosstalk of −38.83 dB. The influence of different etching depths on the top Si layer of the AWG for a constant core width of 0.6 μm as well as birefringence effects were also investigated. A transmission spectrum response at the output port close to the standard CWDM wavelength grid range of 1271 to 1611 nm with an average channel spacing of 2485 GHz was obtained. IntroductionSilicon-on-insulator (SOI) has become a popular choice of material in recent years because of its potential for use in the photonics components manufacturing industry, which uses a monolithic or hybrid integration assembly. Arrayed waveguide gratings (AWG)-based silicon waveguide structures functioning as multiplexers/demultiplexers (mux/ demux) are being widely employed in wavelength-division multiplexing (WDM) systems. There are several advantages in using SOI as a platform for photonics integration, such as low manufacturing costs due to the use of existing complementary metal oxide semiconductor fabrication technology, 1 compact devices, and high confinement of the optical mode. 2 Further, silicon has a high index contrast (Δn) and is transparent at infrared wavelengths, making it suitable for optical communication applications. By using these features of SOI materials, we designed and analyzed an SOI-based AWG mux/demux capable of splitting or combining the multiple signals in a single fiber utilized in coarse wavelength-division multiplexing (CWDM) systems.In this work, we optimized the geometrical rib waveguide structure and characterized the ideal parameters of a linear tapered double S-shaped AWG on an SOI platform to mitigate insertion loss (IL) and adjacent crosstalk (XT) in an 18-channel CWDM device with a channel spacing of 20 nm. The investigations were carried out by selecting the dimensions of the rib waveguide, which allows a single-mode condition where the ratio of the slab height (h) to the thickness of the top silicon (Si) guiding layer (H) or h∕H was in the range

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Section: Awg Design Parametermentioning

confidence: 99%

Optimal design of linear tapered double S-shaped arrayed waveguide grating for broad channel spacing on silicon-on-insulator

Juhari¹,

Menon²,

Ehsan³

et al. 2014

Opt. Eng

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“…This calculation ensures that all the light from the input star coupler is collected by the input array aperture [49]. For these calculations, we utilized the AWG-Parameters tool [18,50], which grounded in the model of Smit and van Dam, and it has already been employed in numerous AWG designs, with successful experimental validation [19,21,[49][50][51]. The AWG design parameters for the 512-channel AWG-spectrometer were computed based on a central wavelength of λc = 850 nm and a resolution of 0.1 nm (also referred to as channel spacing), corresponding to a frequency of df = 42 GHz.…”

Section: Awg Designmentioning

confidence: 99%

CMOS Optoelectronic Spectrometer based on Photonic Integrated Circuits for In Vivo 3D Optical Coherence Tomography

Drexler,

Agneter,

Müllner

et al. 2024

Preprint

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Photonics integrated circuits (PICs) represent a promising technology for the much-needed medical devices of today. Their primary advantage lies in their ability to integrate multiple functions onto a single chip, thereby reducing the complexity, size, maintenance requirements, and costs. When applied to optical coherence tomography (OCT), the leading tool for state-of-the-art ophthalmic diagnosis, PICs have the potential to increase accessibility, especially in scenarios, where size, weight, or costs are limiting factors. In this paper, we introduce an unprecedented fully integrated CMOS-compatible spectrometer, an optoelectronic system based on PIC for spectral domain OCT. To achieve this, we co-integrated a 512-channel arrayed waveguide grating with electronics. We successfully addressed the challenge of establishing a connection with minimal losses between the optical components and photodiodes co-integrated on a chip achieving a transmission efficiency of 70%. With this fully integrated PIC-based spectrometer interfaced to a spectral domain OCT system, we achieved a sensitivity of 92dB at an imaging speed of 55kHz, with a 6dB signal roll-off occurring at 2mm. We applied this innovative technology successfully to obtain 3D in vivo tomograms of zebrafish larvae and human skin. This ground-breaking fully integrated spectrometer represents a significant step towards a miniaturised, cost-effective, and maintenance-free OCT system.

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“…For the parameter calculation an in-house developed tool AWG-Parameters was used (the tool is described in detail in [4,5]). Figure 2a shows the user interface of the tool with the final calculation.…”

Section: Awg Designmentioning

confidence: 99%

Design of 256-channel 25-GHz AWG for ultra-dense wavelength division multiplexing

Seyringer

Serecunova

Uherek

et al. 2022

22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics

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We present 256-channel, 25-GHz AWG designed for ultra-dense wavelength division multiplexing. For the design two in-house developed tools were used: AWG-Parameters tool for the calculation of input design parameters and AWGAnalyser tool, used to evaluate the simulated transmission characteristics. The AWG structure was designed for AWG central wavelength of 1550 nm and simulated with PHASAR tool from Optiwave. To keep the size of AWG structure as small as possible the number of waveguides in the phased array was tested. The simulations show that there is a certain minimum number of phased array waveguides necessary to reach sufficient AWG performance. After optimization, the AWG structure reached 10 cm x 11 cm in size and satisfying optical properties.

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AWG-Parameters: new software tool to design arrayed waveguide gratings

Cited by 9 publications

References 6 publications

Optimal design of linear tapered double S-shaped arrayed waveguide grating for broad channel spacing on silicon-on-insulator

Optimal design of linear tapered double S-shaped arrayed waveguide grating for broad channel spacing on silicon-on-insulator

CMOS Optoelectronic Spectrometer based on Photonic Integrated Circuits for In Vivo 3D Optical Coherence Tomography

Design of 256-channel 25-GHz AWG for ultra-dense wavelength division multiplexing

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