Polarization rotator based on augmented low-index-guiding waveguide on silicon nitride/silicon-on-insulator platform

Sun, Xiao Wei; Alam, Md. Zahangir; Aitchison, J. S.; Mojahedi, Mo

doi:10.1364/ol.41.003229

Cited by 26 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For TE mode isolators, TE-TM polarization rotators (PRs) are inserted at both ends of the TM isolators [16,31,35]. The polarization rotator was based on the mode evolution mechanism to rotate the fundamental TE mode into the fundamental TM mode [36,37]. For the narrow-band optical isolators based on racetrack resonators, the MO waveguide is arranged outside the coupling region between the ring waveguide and the bus waveguide.…”

Section: Device Design and Fabricationmentioning

confidence: 99%

Waveguide-integrated high-performance magneto-optical isolators and circulators on silicon nitride platforms

Yan

Yang

Liu

et al. 2020

Optica

View full text Add to dashboard Cite

Optical isolators and circulators are indispensable for photonic integrated circuits (PICs). Despite of significant progress in silicon-on-insulator (SOI) platforms, integrated optical isolators and circulators have been rarely reported on silicon nitride (SiN) platforms. In this paper, we report monolithic integration of magneto-optical (MO) isolators on SiN platforms with record high performances based on standard silicon photonics foundry process and magneto-optical thin film deposition. We successfully grow high quality MO garnet thin films on SiN with large Faraday rotation up to -5900 deg/cm. We show a superior magnetooptical figure of merit (FoM) of MO/SiN waveguides compared to that of MO/SOI in an optimized device design. We demonstrate TM/TE mode broadband and narrow band optical isolators and circulators on SiN with high isolation ratio, low cross talk and low insertion loss.In particular, we observe 1 dB insertion loss and 28 dB isolation ratio in a SiN racetrack resonator-based isolator at 1570.2 nm wavelength. The low thermo-optic coefficient of SiN also ensures excellent temperature stability of the device. Our work paves the way for integration of high performance nonreciprocal photonic devices on SiN platforms.

show abstract

Section: Device Design and Fabricationmentioning

confidence: 99%

Waveguide-integrated high-performance magneto-optical isolators and circulators on silicon nitride platforms

Yan

Yang

Liu

et al. 2020

Optica

View full text Add to dashboard Cite

show abstract

“…This can lead to designs of new types of polarization control devices similar to those designed using hybrid plasmonic waveguides and silicon slot waveguides , but with a simpler and more flexible fabrication process. We have already designed and implemented ALIG based polarization rotator and polarization splitters, which we reported in separate publications . Another intriguing possibility is the integration of the ALIG with electro‐optic polymers for the design of new kind of electro‐optic modulators.…”

Section: Discussionmentioning

confidence: 99%

Augmented low index waveguide for confining light in low index media

Alam

Sun

Mojahedi

et al. 2017

Laser & Photonics Reviews

View full text Add to dashboard Cite

Guiding light in the low index region of a high refractive index contrast waveguide can be beneficial for many applications including sensing, nonlinear optics and electro‐optics. Existing methods to achieve this goal suffer from fabrication complexity, large loss, or poor optical confinement. We propose a simple structure to achieve a significant enhancement of light confinement in the low index medium. We explain the guiding principle of this structure using geometrical optics, and suggest a number of applications where this guiding structure can provide significant performance benefits. The combination of simplicity, ease of fabrication, and good confinement makes this waveguide an attractive choice for a wide range of applications. To illustrate this, we consider the integration of a nonlinear polymer with a silicon photonic waveguide, and show that significantly better performance with an easier fabrication process can be achieved using this new scheme.

show abstract

“…The Si3N4 platform alone and with III-V material has broadly been used for the polarization rotation and modulators [51][52][53][54][55], resonators and photodetectors [56][57][58][59][60][61][62][63][64][65], grating couplers [66][67][68][69][70], sensing applications [71][72][73][74], highperformance lasers on-chip, delay lines, optical filters, and optical frequency comb generation [75][76]polarization beam splitters and couplers [77][78][79][80]. The foundries all over the world, such as CEA-Leti, AIM photonics, ST microelectronics, and others have announced Si photonics as a platform that integrates Si3N4 waveguide layer onto Si waveguides for various applications [81][82][83][84][85][86][87].As the world is moving towards the high signal bandwidth and data rate, Si3N4 waveguide technology with SOI and III-V platform has recently opened up the new quarters for on-chip applications.…”

Section: Introductionmentioning

confidence: 99%

Review of Recent Progress on Silicon Nitride-Based Photonic Integrated Circuits

et al. 2020

View full text Add to dashboard Cite

Silicon photonic devices are being used in the photonics industry over the past three decades has helped in realizing large-scale photonic integrated circuits. Silicon nitride (Si3N4) is another CMOScompatible platform that provides several advantages such as low loss, high optical power tolerance, and broad spectral operation band from visible to infrared wavelengths. Recently, the combination of Si3N4waveguide technology with silicon photonics and III-V materials has opened up new areas in the field of on-chip applications. Researchers in this field are primarily focusing on its applications such as on-chip gas sensing, nonlinear optical signal processing, and label-free biosensors based on photonic integrated circuits. In this review paper, we discuss Si3N4material-based platforms for variety of applications with devices ranging from passive to active and hybrid photonic devices.

show abstract

Polarization rotator based on augmented low-index-guiding waveguide on silicon nitride/silicon-on-insulator platform

Cited by 26 publications

References 19 publications

Waveguide-integrated high-performance magneto-optical isolators and circulators on silicon nitride platforms

Waveguide-integrated high-performance magneto-optical isolators and circulators on silicon nitride platforms

Augmented low index waveguide for confining light in low index media

Review of Recent Progress on Silicon Nitride-Based Photonic Integrated Circuits

Contact Info

Product

Resources

About