Polarization-transparent microphotonic devices in the strong confinement limit

Barwicz, Tymon; Watts, Michael R.; cacute, Miloš A. Popovi; Rakich, Peter T.; Socci, L.; Kärtner, Franz X.; Ippen, Erich P.; Smith, Henry I.

doi:10.1038/nphoton.2006.41

Cited by 531 publications

(228 citation statements)

References 16 publications

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“…Current was supplied independently to the π phase shifter and the ring heaters. For PDL characterization a tunable laser source and the Fiberpro "PL 2000" PDL meter 1 were employed. The latter employs the polarization scanning method to determine PDL and allows for simultaneous insertion loss measurements.…”

Section: Device and Measurement Setupmentioning

confidence: 99%

“…In one approach, a polarization splitter and rotator is being integrated on the chip, such that the two arms of the polarization diversity circuit are processing the same polarization state. This resulted in relatively low PDL (about 1 dB) [1], [2]. In [3], it was proposed to use a two-dimensional grating structure, which at the same time fulfills the role of optical fiber interface, polarization splitter and rotator, all on a 100 µm 2 area.…”

Section: Introductionmentioning

confidence: 99%

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Reducing Polarization-Dependent Loss of Silicon-on-Insulator Fiber to Chip Grating Couplers

Halir

Vermeulen

Roelkens

2010

IEEE Photon. Technol. Lett.

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Abstract-For many telecommunication applications, low Polarization Dependent Loss (PDL) operation is mandatory. On the silicon-on-insulator photonic wire platform this can be achieved using polarization diversity configurations. However, as we show here, when using two dimensional grating couplers for near vertical fiber input and output, the low PDL bandwidth is limited. We propose and demonstrate the use of a π phase shifter in one of the arms of the polarization diversity circuit to effectively reduce PDL (0.15 dB PDL is shown) and increase the low PDL bandwidth.

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Section: Device and Measurement Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reducing Polarization-Dependent Loss of Silicon-on-Insulator Fiber to Chip Grating Couplers

Halir

Vermeulen

Roelkens

2010

IEEE Photon. Technol. Lett.

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“…A POLARIZATION converter has many applications [1], including polarization controllers, switches, and polarization diversity heterodyne receivers. After investigating a longitudinally periodic structure [2], converters based on a single asymmetric sloped rib waveguide have been proposed and investigated [3]- [9].…”

Section: Introductionmentioning

confidence: 99%

A Short Polarization Converter Using a Triangular Waveguide

Yamauchi

Yamanoue

Nakano

2008

J. Lightwave Technol.

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Abstract-A novel polarization converter using a triangular waveguide is proposed and analyzed by the imaginary-distance beam-propagation method based on Yee's mesh and the finite-difference time-domain method. The polarization conversion length is investigated as a function of relative refractive index difference. It is found, for a silicon core embedded in a silica cladding, that the conversion length is 2 m, while the insertion loss is 0.5 dB at a wavelength of 1.55 m. The extinction ratio is more than 20 dB over a wide wavelength range of 1.25 to 1.65 m. Using a geometrically expanded model, the polarization conversion behavior is verified in the experiment at a microwave frequency of 15 GHz. Finally, reasonable polarization conversion is obtained with a modified structure, in which the two corners of the triangular waveguide are cut and the cut plane is aligned with a square input (output) waveguide.

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“…While operation in a singlepolarization state has been demonstrated to be effective for communications, signal processing and sensing [3][4][5] , the lack of dynamic polarization control is a significant lacuna in the technology. Electrical control of optical polarization would create new avenues, including routes to advances in modulation [6][7][8][9] , coherent communications 10 , quantum computing 11,12 and polarization diversity 13,14 .…”

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confidence: 99%

Electrically tunable optical polarization rotation on a silicon chip using Berry’s phase

Chen

Wood

et al. 2014

Nat Commun

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The continued convergence of electronics and photonics on the chip scale can benefit from the voltage control of optical polarization for applications in communications, signal processing and sensing. It is challenging, however, to electrically manipulate the polarization state of light in planar optical waveguides. Here we introduce out-of-plane optical waveguides, allowing access to Berry's phase, a quantum-mechanical phenomenon of purely topological origin. As a result, electrically tunable optical polarization rotation on the chip scale is achieved. Devices fabricated in the silicon-on-insulator material platform are not limited to a single static polarization state. Rather, they can exhibit dynamic tuning of polarization from the fundamental transverse electric mode to the fundamental transverse magnetic mode. Electrical tuning of optical polarization over a 19 dB range of polarization extinction ratio is demonstrated with less than 1 dB of conversion loss at infrared wavelengths. Compact system architectures involving dynamic control of optical polarization in integrated circuits are envisioned.

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Polarization-transparent microphotonic devices in the strong confinement limit

Cited by 531 publications

References 16 publications

Reducing Polarization-Dependent Loss of Silicon-on-Insulator Fiber to Chip Grating Couplers

Reducing Polarization-Dependent Loss of Silicon-on-Insulator Fiber to Chip Grating Couplers

A Short Polarization Converter Using a Triangular Waveguide

Electrically tunable optical polarization rotation on a silicon chip using Berry’s phase

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