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- 2019
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Huang, Qiangsheng, et al.
(författare)
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Ultracompact tapered coupler for the Si/III-V heterogeneous integration
- 2015
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Ingår i: Applied Optics. - 1559-128X .- 2155-3165. ; 54:14, s. 4327-4332
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Tidskriftsartikel (refereegranskat)abstract
- An ultracompact tapered coupler, which is suitable for mode transformation between a 220 nm high silicon wire waveguide and a Si/III-V hybrid waveguide, is proposed for Si/III-V heterogeneous integration. The tapered coupler is composed of three sections. Since the tapered coupler avoids exciting the unwanted high-order modes in the III-V waveguide, the length of the tapered coupler can be dramatically shortened. In the proposed structure, the total length of the trisectional tapered coupler can be as short as 8 mu m with a fundamental mode-coupling efficiency of over 95% in a bandwidth of over 100 nm. The alignment tolerance of the proposed structure is also analyzed.
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| 3. |
- Park, Hyundai, et al.
(författare)
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Device and Integration Technology for Silicon Photonic Transmitters
- 2011
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Ingår i: IEEE Journal of Selected Topics in Quantum Electronics. - 1077-260X .- 1558-4542. ; 17:3, s. 671-688
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Tidskriftsartikel (refereegranskat)abstract
- The device and integration technology for silicon photonic transmitters are reviewed in this paper. The hybrid silicon platform enables on-chip lasers to be fabricated with silicon photonic circuits and can be integrated in the CMOS back-end flow. Laser arrays from multiple die bonding and quantum well intermixing techniques are demonstrated to extend the spectral bandwidth from the laser array of the transmitter. Two modulator technologies, silicon modulators and hybrid silicon modulators, are also described.
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| 4. |
- Tang, Yongbo, et al.
(författare)
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Design and optimization of an arbitrarily segmented traveling wave electrode for an ultrahigh speed electroabsorption modulator
- 2008
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018 .- 1873-0310. ; 281:20, s. 5177-5182
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Tidskriftsartikel (refereegranskat)abstract
- The modulation response of an arbitrarily segmented traveling wave electroabsorption modulator (TW-EAM) with a non-periodic electrode layout is analyzed with an effective approach based on the transmission line theory. An optimization method based on a genetic algorithm is used to optimize the segmented electrode with additional capacitive pads for a TW-EAM. Optimized electrode structures are given for 165 mu m-length devices under standard 50 Omega RF termination condition and 210 mu m-length devices with smaller integrated resistors. Great enhancement of performances in modulation response is achieved as compared to the periodic design reported previously. The simulation with the parameters extracted from measurement results suggests that a 3 dB-bandwidth over 100 GHz could be achieved. The eye diagram from the simulation demonstrates that such devices would be competent for a 100Gb/s optical network.
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| 5. |
- Tang, Yongbo, et al.
(författare)
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Over 40 GHz traveling-wave electroabsorption modulator based on hybrid silicon platform
- 2011
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Ingår i: 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference. - : OSA Publishing. - 9781557529060
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Konferensbidrag (refereegranskat)abstract
- A hybrid silicon traveling-wave electroabsorption modulator has been demonstrated. 43 GHz bandwidth and over 10 dB static extinction ratio are achieved for a 100 μm long device.
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| 6. |
- Wosinski, Lech, et al.
(författare)
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Interfacing of Silicon-on-insulator nanophotonic circuits to the real world
- 2010
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Ingår i: 2010 12th International Conference on Transparent Optical Networks (ICTON). - : IEEE Communications Society. - 9781424477999 - 9781424477975 ; , s. 5549268-
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Konferensbidrag (refereegranskat)abstract
- Silicon-on-insulator material structure allows for very high light confinement in the silicon core due to its high refractive index. The advantages of this technology include the possibility to miniaturize devices and integrate different functions on a single chip, reduction of optical loss and power consumption and potential perspectives for low cost mass production in CMOS technology line. Together with these advantages some new problems appear in comparison to weakly guided light in silica-on-silicon components, causing additional challenges for researchers to be solved. Besides much higher demands for fabrication accuracy, high refractive index contrast introduces additional optical input/output coupling problems as well as much higher polarization sensitivity of nanophotonic structures. Here we will propose some solutions for these problems and illustrate them with designed and fabricated components
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