Experimental demonstration of an integrated hybrid plasmonic polarization rotator

Caspers, J. Niklas; Aitchison, J. S.; Mojahedi, Mo

doi:10.1364/ol.38.004054

Cited by 51 publications

(31 citation statements)

References 17 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plasmonic metal nanostructure can confine light down to the subwavelength scale [19], and may reduce the device size and enhance the operating bandwidth [14]. For the PR applications, an asymmetric waveguide cross-section can be introduced by covering the top or side-wall surfaces of silicon waveguide, with a metal, asymmetrically [20][21][22]. In these cases, hybrid modes with a plasmonic structure introduce a large effective refractive index differences, resulting an ultrashort conversion length.…”

Section: Introductionmentioning

confidence: 99%

Polarization rotation and coupling between silicon waveguide and hybrid plasmonic waveguide

Kim¹,

Qi²

2015

Opt. Express

View full text Add to dashboard Cite

We present a polarization rotation and coupling scheme that rotates a TE 0 mode in a silicon waveguide and simultaneously couples the rotated mode to a hybrid plasmonic (HP 0 ) waveguide mode. Such a polarization rotation can be realized with a partially etched asymmetric hybrid plasmonic waveguide consisting of a silicon strip waveguide, a thin oxide spacer, and a metal cap made from copper, gold, silver or aluminum. Two implementations, one with and one without the tapering of the metal cap are presented, and different taper shapes (linear and exponential) are also analyzed. The devices have large 3 dB conversion bandwidths (over 200 nm at near infrared) and short length (< 5 μm), and achieve a maximum coupling factor of ∼ 78% with a linearly tapered silver metal cap.

show abstract

Section: Introductionmentioning

confidence: 99%

Polarization rotation and coupling between silicon waveguide and hybrid plasmonic waveguide

Kim¹,

Qi²

2015

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Generally, HPWs have the advantage of the long propagation length compared with DLSPPWs due to their low loss. Therefore, HPWs are used in several applications, such as an optical laser [8], polarization rotators [9,10,11,12], a wavelength filter [13], ring resonators [14,15,16], an optical polarizer [17], a directional coupler [18], a power splitter [19], and polarization splitters [20,21]. Since these plasmonic devices are fabricated on Si substrate together with optical devices based on silicon wire waveguides, the coupling between these two different waveguides are necessary for their integration.…”

Section: Introductionmentioning

confidence: 99%

A photonic-plasmonic mode converter using mode-coupling-based polarization rotation for metal-inserted silicon platform

Ishizaka

Nagai

Fujisawa

et al. 2017

IEICE Electron. Express

View full text Add to dashboard Cite

We present a photonic-plasmonic mode converter using modecoupling-based polarization rotation for connecting a silicon wire and hybrid plasmonic waveguides on a metal-inserted silicon platform. By using the polarization rotator based on defect-introduced silicon wire waveguide, the proposed mode converter can convert the photonic TE mode into the hybrid plasmonic TM mode. At the beginning, to identify a cross-sectional structure for polarization conversion, we investigate the hybrid parameters that determine the degree of mode rotation using the two-dimensional vector finite element method. Next, using the three-dimensional vector finite element method, we investigate the conversion characteristics of the whole device including input and output ports. Numerical results show that the extinction ratio of 46 dB and the insertion loss of 0.36 dB are achieved. The tolerance of the defect is also numerically evaluated. Our proposed mode converter can reduce insertion losses compared to conventional mode converters based on a taper-introduced butt joint structure.

show abstract

“…However, this approach requires long device lengths and high aspect ratios, and in some cases several polarization beam splitters to enhance the polarization extinction ratio (PER) and performance [8]. The PR which is based on the plasmonic waveguide can reduce the device length; however, it requires extra fabrication steps for metal deposition and has a high insertion loss [9]. Last, when designing PRs, it seems an asymmetrical directional coupler is the preferred technique due to its relatively simple fabrication and broadband response [10][11][12].…”

mentioning

confidence: 99%

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

et al. 2016

View full text Add to dashboard Cite

Using a newly proposed augmented low-index-guiding scheme with silicon nitride/silicon dual-core waveguide, we have designed, fabricated, and characterized a transverse electric (TE) to transverse magnetic (TM) and TM-to-TE compact polarization rotator. The polarization rotation is realized in an asymmetric directional coupler. The measured peak conversion efficiencies for the TE-to-TM and TM-to-TE rotations are approximately 97%. The measured polarization extinction ratio for the TE-to-TM rotation is greater than 20 dB over 50-nm bandwidth, while for the TM-to-TE rotation it is greater than 15 dB over the C-band.

show abstract

Experimental demonstration of an integrated hybrid plasmonic polarization rotator

Cited by 51 publications

References 17 publications

Polarization rotation and coupling between silicon waveguide and hybrid plasmonic waveguide

Polarization rotation and coupling between silicon waveguide and hybrid plasmonic waveguide

A photonic-plasmonic mode converter using mode-coupling-based polarization rotation for metal-inserted silicon platform

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

Contact Info

Product

Resources

About