Compact MMI-Based AWGs in a Scalable Monolithic Silicon Photonics Platform

Taha, Ayat M.; Chandran, Sujith; Viegas, Jaime; Bian, Yusheng; Rakowski, Michal; Augur, Rod; Jacob, Ajey P.; Dahlem, Marcus S.

doi:10.1109/jphot.2021.3099436

Cited by 11 publications

(3 citation statements)

References 30 publications

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“…For instance, the footprint reduction can be achieved by replacing the free propagation regions with multi-mode interferometers (Fig. 8a ) 68 and connecting the ends of the arrayed waveguides to reflectors (Fig. 8b ) 69 , 70 , while the crosstalk can be suppressed by using advanced free propagation regions as well as wider waveguides, as shown in Fig.…”

Section: Technological Analysis Of Integrated Spectrometersmentioning

confidence: 99%

Advances in cost-effective integrated spectrometers

Yao

Xia

et al. 2022

Light Sci Appl

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The proliferation of Internet-of-Things has promoted a wide variety of emerging applications that require compact, lightweight, and low-cost optical spectrometers. While substantial progresses have been made in the miniaturization of spectrometers, most of them are with a major focus on the technical side but tend to feature a lower technology readiness level for manufacturability. More importantly, in spite of the advancement in miniaturized spectrometers, their performance and the metrics of real-life applications have seldomly been connected but are highly important. This review paper shows the market trend for chip-scale spectrometers and analyzes the key metrics that are required to adopt miniaturized spectrometers in real-life applications. Recent progress addressing the challenges of miniaturization of spectrometers is summarized, paying a special attention to the CMOS-compatible fabrication platform that shows a clear pathway to massive production. Insights for ways forward are also presented.

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Section: Technological Analysis Of Integrated Spectrometersmentioning

confidence: 99%

Advances in cost-effective integrated spectrometers

Yao

Xia

et al. 2022

Light Sci Appl

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“…State-of-the-art optical multiplexers that used arrayed waveguide grating-based MMIs [24] showed crosstalk values of 12.7 dB, and an insertion loss of 1 dB. Improved crosstalk values of 22 dB were reported for Bragg reflector-based multiplexers [25], with an insertion loss of 1.65 dB.…”

Section: Introductionmentioning

confidence: 99%

Designing an Optical Router Based on a Multimode-Interference Silicon-On-Insulator Coupler with Tunable Power Transmittance

Akil,

Othman,

Sherif

et al. 2024

Photonics

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The demand on fast and high-bandwidth data transmission is in continuous increase. These demands are highly dependent on optical signal manipulation, including switching, modulation, and routing. We demonstrate a two-port silicon optical router based on the multimode interferometer (MMI) configuration. The same MMI structure was used for both inward and backward waveguiding to reduce the total length of the device. A phase shifter consisting of two ring-like waveguides made of silicon p-n junctions was used to introduce the phase shift needed for optical routing upon voltage application. Two designs for the MMI optical router were studied: Firstly, a conventional MMI with a crosstalk ratio of 15.1 dB was investigated. Finally, an angled MMI reaching a crosstalk ratio of 18.2 dB at a wavelength of 1.55 μm was investigated.

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“…These devices are very compact, although due to their resonant nature they are very prone to fabrication errors or temperature variations. Another type of filters are arrayed waveguide gratings (AWGs) [4]- [6] or Echelle gratings [7]- [9]. Conventional AWG structures use power splitters based on wavefront division using free propagation regions (FPRs).…”

Section: Introductionmentioning

confidence: 99%

Fabrication-Tolerant O-Band WDM Filter With Phase-Balanced Tapered Arms and Wavelength-Independent Couplers

Papadovasilakis,

Chandran,

Gebregiorgis

et al. 2024

J. Lightwave Technol.

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We design, simulate, and experimentally demonstrate a coarse wavelength-division de-multiplexing system based on cascaded Mach-Zehnder interferometers (MZIs) operating in the O-band. The fabricated devices are built on a monolithic silicon photonics platform in a state-of-the-art CMOS foundry. The fabrication tolerance of the device was obtained by a combination of analytical and 3D Finite-difference time-domain (FDTD) methods. Fabrication-tolerant wavelength-independent couplers were used in order to achieve broadband splitting ratios (SRs) and ensure device stability along the entire wavelength range. In addition, phase-balanced linear tapers were used to allow for arbitrary waveguide width values for the MZIs. Experimental results show very high-performance stability across different wafer test sites with a mean channel spectral shift of only 1.03 nm and a total device footprint of 0.582 mm 2 .

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Compact MMI-Based AWGs in a Scalable Monolithic Silicon Photonics Platform

Cited by 11 publications

References 30 publications

Advances in cost-effective integrated spectrometers

Advances in cost-effective integrated spectrometers

Designing an Optical Router Based on a Multimode-Interference Silicon-On-Insulator Coupler with Tunable Power Transmittance

Fabrication-Tolerant O-Band WDM Filter With Phase-Balanced Tapered Arms and Wavelength-Independent Couplers

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