Low Vpp, ultralow-energy, compact, high-speed silicon electro-optic modulatorPo Dong
Kotura Inc, 2630 corporate place, Monterey Park, CA, 91754, USA
Opt Express 17:22484-90. 2009
..5 dB together with an insertion loss of 2 dB, ultralow energy consumption of 50 fJ per bit, and a small device active area of approximately 1000 microm(2)...
- Submilliwatt, ultrafast and broadband electro-optic silicon switches
Po Dong
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 18:25225-31. 2010
..We find that at the concentration of 10(16) cm(-3), the index change is about twice that calculated by the commonly used index change equation...
- 1x4 reconfigurable demultiplexing filter based on free-standing silicon racetrack resonators
Po Dong
Kotura Inc, 2630 corporate place, Monterey Park, California 91754, USA
Opt Express 18:24504-9. 2010
..5 dB, respectively. The total power to achieve this performance is in the range of 1.84 mW to 2.4 mW. Such low-power, compact, and reconfigurable filters are particularly useful in chip-scale optical interconnects...
- GHz-bandwidth optical filters based on high-order silicon ring resonators
Po Dong
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 18:23784-9. 2010
..Both second-order and fifth-order ring resonators are presented, which can find ready application in microwave/radio frequency signal processing...
- Thermally tunable silicon racetrack resonators with ultralow tuning power
Po Dong
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 18:20298-304. 2010
..The 10%-90% switching time is demonstrated to be ~170 µs. Such low-power tunable micro-resonators are particularly useful as multiplexing devices and wavelength-tunable silicon microcavity modulators...
- High-speed and compact silicon modulator based on a racetrack resonator with a 1 V drive voltage
Po Dong
Kotura, Inc, 2630 corporate place, Monterey Park, California 91754, USA
Opt Lett 35:3246-8. 2010
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- Wavelength-tunable silicon microring modulator
Po Dong
Kotura Inc, 2630 corporate place, Monterey Park, CA, 91754, USA
Opt Express 18:10941-6. 2010
..4 mW/nm (2.4 mW is needed to tune the resonant wavelength by 1 nm). This device aims to solve the narrow bandwidth problem of silicon microcavity modulators and increase the data bandwidth in optical interconnect systems...
- Low power and compact reconfigurable multiplexing devices based on silicon microring resonators
Po Dong
Kotura Inc, Monterey Park, CA 91754, USA
Opt Express 18:9852-8. 2010
..Negligible thermal crosstalk is demonstrated for rings spaced by 15 microm, enabling compact multiplexing devices. The tuning time constant is demonstrated to be less than 10 micros...
- Design and fabrication of 3μm silicon-on-insulator waveguide integrated Ge electro-absorption modulator
Ning ning Feng
Kotura Inc, Monterey Park, CA 91754, USA
Opt Express 19:8715-20. 2011
..9-8.2 dB over the wavelength range of 1610-1640 nm. Subtracting the contribution of the transition loss, the Δα/α value for the fabricated device was estimated to be between 2.2 and 3.2 with an electric field around 55 kV/cm...
- Vertical p-i-n germanium photodetector with high external responsivity integrated with large core Si waveguides
Ning ning Feng
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 18:96-101. 2010
..5A/W. Further studies suggest that with a modified design the device is capable of achieving 1A/W external responsivity for both TE and TM polarizations and greater than 30GHz bandwidth...
- 30GHz Ge electro-absorption modulator integrated with 3 μm silicon-on-insulator waveguide
Ning ning Feng
Kotura Inc, 2630 corporate place, Monterey Park, California 91754, USA
Opt Express 19:7062-7. 2011
..3. The 3 dB bandwidth measurements show that the device is capable of operating at more than 30 GHz. Clear eye-diagram openings at 12.5 Gbps demonstrates large signal modulation at high transmission rate...
- 36 GHz submicron silicon waveguide germanium photodetector
Shirong Liao
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 19:10967-72. 2011
..6A/W to 0.95 A/W at 1550 nm with 36 GHz 3 dB bandwidth. We also demonstrate that a wider device with double offset contacts can achieve 1.05 A/W responsivity at 1550 nm and 20 GHz 3 dB bandwidth...
- Thermally-efficient reconfigurable narrowband RF-photonic filter
Ning ning Feng
Kotura Inc, 2630 corporate place, Monterey Park, CA 91754, USA
Opt Express 18:24648-53. 2010
..By introducing thermal isolation trenching, we are able to achieve IIR, FIR or arbitrary mixed response with less than 120 mW average tuning power in a single RF-photonic unit cell filter...
