Journal ArticleDOI
Polarization management for silicon photonic integrated circuits
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TLDR
Polarization management is very important for photonic integrated circuits (PICs) and their applications as mentioned in this paper, however, due to geometrical anisotropy and fabrication inaccuracies, the characteristics of the guided transverseelectrical (TE) and transverse-magnetic (TM) modes are generally different.Abstract:
Polarization management is very important for photonic integrated circuits (PICs) and their applications. Due to geometrical anisotropy and fabrication inaccuracies, the characteristics of the guided transverse-electrical (TE) and transverse-magnetic (TM) modes are generally different. Polarization-dependent dispersion and polarization-dependent loss are such manifestations in PICs. These issues become more severe in high index contrast structures such as nanophotonic waveguides made of silicon-on-insulator (SOI), which has been regarded as a good platform for optical interconnects because of the compatibility with CMOS processing. Recently, polarization division multiplexing (PDM) with coherent detection using silicon photonics has also attracted much attention. This trend further highlights the importance of polarization management in silicon PICs. The authors review their work on polarization management for silicon PICs using the polarization independence and polarization diversity methods. Polarization issues and solutions in PICs made of SOI nanowires and ridge waveguides are discussed.read more
Citations
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Journal ArticleDOI
Ultra-dense dual-polarization waveguide superlattices on silicon.
TL;DR: A dual-polarization waveguide superlattice is designed and realized by using 340 nm-thick silicon photonic waveguides for both polarizations within the range of 1530 nm to 1560 nm, which agrees well with the theoretical analysis.
Journal ArticleDOI
Ultrashort polarization rotator based on cross-symmetry waveguide
Xu Wang,Jianji Dong +1 more
TL;DR: In this article, an ultrashort polarization rotator based on cross-symmetry waveguide is proposed and discussed, which can achieve rather high conversion efficiency ( > 97 % ) over a broad bandwidth ( 1450 − 1700 nm ).
Proceedings ArticleDOI
Integrated polarizers based on graphene oxide in waveguides and ring resonators
Jiayang Wu,Yunyi Yang,Yuning Zhang,Yang Qu,Xingyuan Xu,Linnan Jia,Yao Liang,Sai T. Chu,Brent E. Little,Roberto Morandotti,Roberto Morandotti,Baohua Jia,David J. Moss +12 more
TL;DR: In this article, the authors demonstrate integrated waveguide polarizers and polarization-selective micro-ring resonators (MRRs) incorporated with graphene oxide (GO), achieving an 8.3dB extinction ratio between the TE and TM resonances, with the extracted propagation loss showing good agreement with the waveguide results.
Proceedings ArticleDOI
Thermo-optic variable attenuator/waveplate based on waveguides patterned on organic-inorganic hybrids
C. M. S. Vicente,C. Freitas,Paulo Marques,Sandra F. H. Correia,Patrícia P. Lima,Luís D. Carlos,Paulo André,Rute A. S. Ferreira +7 more
Abstract: This work reports a variable attenuator/waveplate based on thermo-optic (TO) effect induced on a waveguide patterned by direct UV-laser writing on films of organic-inorganic di-ureasil hybrids. The waveguide temperature was tuned inducing phase retardation between the transverse electric (TE) and transverse magnetic (TM) modes, resulting in a controllable waveplate. Furthermore, the waveguide TO actuation allows obtaining a variable optical attenuator. The relevant properties, such as attenuation, polarization dependence of the thermal actuation and power consumption will be presented in the NIR (1550 nm). The required electrical power and temperature variation to attain the optical signal extinction and the retardation phase of π/2 were estimated.
Journal ArticleDOI
Numerical Investigation on Elliptic Cylindrical Nanowire Hybrid Plasmonic Waveguide–Based Polarization Beam Splitter
TL;DR: In this article, a novel design of elliptic cylindrical nanowire hybrid plasmonic waveguide (ECNHPW)-based polarization beam splitter (PBS) is proposed.
References
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Journal ArticleDOI
The Past, Present, and Future of Silicon Photonics
TL;DR: In this paper, the state-of-the-art CMOS silicon-on-insulator (SOI) foundries are now being utilized in a crucial test of 1.55mum monolithic optoelectronic (OE) integration, a test sponsored by the Defense Advanced Research Projects Agency (DARPA).
Journal ArticleDOI
Guiding and confining light in void nanostructure.
TL;DR: It is shown that by use of a novel waveguide geometry the field can be confined in a 50-nm-wide low-index region with a normalized intensity of 20 microm(-2), approximately 20 times higher than what can be achieved in SiO2 with conventional rectangular waveguides.
Journal ArticleDOI
Recent progress in lasers on silicon
Di Liang,John E. Bowers +1 more
TL;DR: In this paper, the authors review the most recent progress in this field, including low-threshold silicon Raman lasers with racetrack ring resonator cavities, the first germanium-on-silicon lasers operating at room temperature, and hybrid silicon microring and microdisk lasers.
Journal ArticleDOI
Losses in single-mode silicon-on-insulator strip waveguides and bends.
Yurii A. Vlasov,Sharee J. McNab +1 more
TL;DR: The fabrication and accurate measurement of propagation and bending losses in single-mode silicon waveguides with submicron dimensions fabricated on silicon-on-insulator wafers with record low numbers can be used as a benchmark for further development of silicon microphotonic components and circuits.
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