Wavelength selective switching with one-chip silicon photonic circuit including 8 × 8 matrix switch

Nakamura, Shigeru; Takahashi, Shigeki; Sakauchi, Masahiro; Hino, Takanori; Yu, Mingbin; Lo, Guo‐Qiang

doi:10.1364/ofc.2011.otum2

Cited by 20 publications

(16 citation statements)

References 1 publication

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“…One approach for the polarization independence is to make the mode confinement weaker using a rib waveguides. By using this approach, an 8 Â 8 PILOSS switch was fabricated on a 1.5-µm-thick SOI wafer [23]. Another approach is a diversity circuit, where the two orthogonal polarization modes are separated through a polarization beam splitter (PBS), switched separately in each optical circuit, and finally combined by another PBS.…”

Section: Polarization Dependencymentioning

confidence: 99%

“…Nakamura et al reported on a non-blocking 8 Â 8 PILOSS switch integrated with an arrayed waveguide grating for wavelength-selective switching around a wavelength of 1.6 µm [23]. This is the only multiport switch with polarization independence reported to date.…”

Section: Pioneering Workmentioning

confidence: 99%

“…Therefore, accurate and uniform fabrication is again important to have a very small phase error in the MZ switches [23] as discussed in the first paragraph of the previous section.…”

Section: Feasible Improvementsmentioning

confidence: 99%

“…For operation bandwidth [14], polarization dependence [23], and driver electronics [26], attempts to integrate with multiport number switches have been already reported as presented in the previous section. Another comment for operation bandwidth is that the MMIs in [23] have a broader operation bandwidth than the directional couplers while the loss of the MMIs is generally larger than that of the directional couplers.…”

Section: Feasible Improvementsmentioning

confidence: 99%

“…Another comment for operation bandwidth is that the MMIs in [23] have a broader operation bandwidth than the directional couplers while the loss of the MMIs is generally larger than that of the directional couplers. Also, another wavelength-independent coupler design was reported [28].…”

Section: Feasible Improvementsmentioning

confidence: 99%

See 4 more Smart Citations

Multiport optical switches integrated on Si photonics platform

Suzuki

Cong

Tanizawa

et al. 2014

IEICE Electron. Express

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This paper reviews recent progress in integrated multiport optical switch, fabricated on silicon-on-insulator wafers. Typical topologies of multiport switch and the element switches are first described. Then, we review pioneering studies of the integrated multiport switches. We also describe feasible improvements, some of which will better fit the switch to a real use in telecommunication and some to enlarge the port count.

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Section: Polarization Dependencymentioning

confidence: 99%

Section: Pioneering Workmentioning

confidence: 99%

“…Therefore, accurate and uniform fabrication is again important to have a very small phase error in the MZ switches [23] as discussed in the first paragraph of the previous section.…”

Section: Feasible Improvementsmentioning

confidence: 99%

Section: Feasible Improvementsmentioning

confidence: 99%

Section: Feasible Improvementsmentioning

confidence: 99%

See 3 more Smart Citations

Multiport optical switches integrated on Si photonics platform

Suzuki

Cong

Tanizawa

et al. 2014

IEICE Electron. Express

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32 × 32 silicon electro-optic switch with built-in monitors and balanced-status units

Qiao

Tang

Chu

2017

Sci Rep

203

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To construct large-scale silicon electro-optical switches for optical interconnections, we developed a method using a limited number of power monitors inserted at certain positions to detect and determine the optimum operating points of all switch units to eliminate non-uniform effects arising from fabrication errors. We also introduced an optical phase bias to one phase-shifter arm of a Mach–Zehnder interferometer (MZI)-type switch unit to balance the two operation statuses of a silicon electro-optical switch during push–pull operation. With these methods, a 32 × 32 MZI-based silicon electro-optical switch was successfully fabricated with 180-nm complementary metal–oxide–semiconductor (CMOS) process technology, which is the largest scale silicon electro-optical switch to the best of our knowledge. At a wavelength of 1520 nm, the on-chip insertion losses were 12.9 to 16.5 dB, and the crosstalk ranged from −17.9 to −24.8 dB when all units were set to the ‘Cross’ status. The losses were 14.4 to 18.5 dB, and the crosstalk ranged from −15.1 to −19.0 dB when all units were in the ‘Bar’ status. The total power consumptions of the 32 × 32 switch were 247.4 and 542.3 mW when all units were set to the ‘Cross’ and ‘Bar’ statuses, respectively.

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Low-crosstalk waveguide crossing based on 1×1 MMI structure of silicon-wire waveguide

Kim

Cong

Kawashima

et al. 2013

2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR)

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Waveguide crossing based on a tilted multimodeinterference (MMI) structure in high-index-contrast silicon wire is reported. For low crosstalk and low loss, crossing angle of MMIs is optimized. The measured crosstalk with the optimal crossing angle of 110 is -44 dB at wavelength of 1550 nm. This corresponds to improvement by more than 14 dB from previously reported crosstalk with 90-crossings of MMIs.

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Wavelength selective switching with one-chip silicon photonic circuit including 8 × 8 matrix switch

Cited by 20 publications

References 1 publication

Multiport optical switches integrated on Si photonics platform

Multiport optical switches integrated on Si photonics platform

32 × 32 silicon electro-optic switch with built-in monitors and balanced-status units

Low-crosstalk waveguide crossing based on 1×1 MMI structure of silicon-wire waveguide

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Wavelength selective switching with one-chip silicon photonic circuit including 8 × 8 matrix switch

Cited by 20 publications

References 1 publication

Multiport optical switches integrated on Si photonics platform

Multiport optical switches integrated on Si photonics platform

32 × 32 silicon electro-optic switch with built-in monitors and balanced-status units

Low-crosstalk waveguide crossing based on 1&#x00D7;1 MMI structure of silicon-wire waveguide

Contact Info

Product

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About

Low-crosstalk waveguide crossing based on 1×1 MMI structure of silicon-wire waveguide