scholarly journals Optimization of PAM-4 transmitters based on lumped silicon photonic MZMs for high-speed short-reach optical links

2017 ◽  
Vol 25 (4) ◽  
pp. 4312 ◽  
Author(s):  
Shiyu Zhou ◽  
Hsin-ta Wu ◽  
Khosrov Sadeghipour ◽  
Carmelo Scarcella ◽  
Cormac Eason ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Links ◽  
Silicon Photonic

scholarly journals Asymmetric Ge/SiGe coupled quantum well modulators

Nanophotonics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1765-1773
Author(s):  
Yi Zhang ◽  
Jianfeng Gao ◽  
Senbiao Qin ◽  
Ming Cheng ◽  
Kang Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Quantum Well ◽  
Quantum Wells ◽  
High Speed ◽  
Low Voltage ◽  
Extinction Ratio ◽  
High Frequency Response ◽  
Modulation Format ◽  
Silicon Photonic ◽  
Coupled Quantum Well

Abstract We design and demonstrate an asymmetric Ge/SiGe coupled quantum well (CQW) waveguide modulator for both intensity and phase modulation with a low bias voltage in silicon photonic integration. The asymmetric CQWs consisting of two quantum wells with different widths are employed as the active region to enhance the electro-optical characteristics of the device by controlling the coupling of the wave functions. The fabricated device can realize 5 dB extinction ratio at 1446 nm and 1.4 × 10−3 electrorefractive index variation at 1530 nm with the associated modulation efficiency V π L π of 0.055 V cm under 1 V reverse bias. The 3 dB bandwidth for high frequency response is 27 GHz under 1 V bias and the energy consumption per bit is less than 100 fJ/bit. The proposed device offers a pathway towards a low voltage, low energy consumption, high speed and compact modulator for silicon photonic integrated devices, as well as opens possibilities for achieving advanced modulation format in a more compact and simple frame.

A 25 Gbps VCSEL driving ASIC: an attempt for ultra-high-speed front-end readout applications

2022 ◽  
Vol 17 (01) ◽  
pp. C01040
Author(s):  
C. Zhao ◽  
D. Guo ◽  
Q. Chen ◽  
N. Fang ◽  
Y. Gan ◽  
...  
Keyword(s):  
High Speed ◽  
Cmos Technology ◽  
Test Results ◽  
Eye Diagram ◽  
Optical Links ◽  
Optical Module ◽  
Active Feedback ◽  
High Bandwidth ◽  
Output Driver ◽  
Very High

Abstract This paper presents the design and the test results of a 25 Gbps VCSEL driving ASIC fabricated in a 55 nm CMOS technology as an attempt for the future very high-speed optical links. The VCSEL driving ASIC is composed of an input equalizer stage, a pre-driver stage and a novel output driver stage. To achieve high bandwidth, the pre-driver stage combines the inductor-shared peaking structure and the active-feedback technique. A novel output driver stage uses the pseudo differential CML driver structure and the adjustable FFE pre-emphasis technique to improve the bandwidth. This VCSEL driver has been integrated in a customized optical module with a VCSEL array. Both the electrical function and optical performance have been fully evaluated. The output optical eye diagram has passed the eye mask test at the data rate of 25 Gbps. The peak-to-peak jitter of 25 Gbps optical eye is 19.5 ps and the RMS jitter is 2.9 ps.

High-speed silicon photonic optical interconnects for cryogenic readout (Conference Presentation)

2020 ◽  
Author(s):  
Steven B. Estrella ◽  
Takako Hirokawa ◽  
Aaron Maharry ◽  
Daniel S. Renner ◽  
Clint L. Schow
Keyword(s):  
Optical Interconnects ◽  
High Speed ◽  
Silicon Photonic

High-speed optical links

2019 ◽  
Author(s):  
Azita Emami ◽  
Kuan-Chang Chen ◽  
Arian Hashemi
Keyword(s):  
High Speed ◽  
Optical Links

Ultralow Power 80 Gb/s Arrayed CMOS Silicon Photonic Transceivers for WDM Optical Links

2012 ◽  
Vol 30 (4) ◽  
pp. 641-650 ◽  
Author(s):  
Xuezhe Zheng ◽  
Frankie Liu ◽  
Jon Lexau ◽  
Dinesh Patil ◽  
Guoliang Li ◽  
...  
Keyword(s):  
Optical Links ◽  
Silicon Photonic ◽  
Ultralow Power

Reconfigurable Forward Error Correction Decoder for Beyond 100 Gbps High Speed Optical Links

2015 ◽  
Vol 19 (2) ◽  
pp. 119-122 ◽  
Author(s):  
Bomin Li ◽  
Knud J. Larsen ◽  
Darko Zibar ◽  
Idelfonso Tafur Monroy
Keyword(s):  
Error Correction ◽  
High Speed ◽  
Forward Error Correction ◽  
Optical Links ◽  
Forward Error
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