Fabrication and optical characteristics of silicon-based two-dimensional wavelength division multiplexing splitter with photonic crystal directional waveguide couplers

2011 ◽  
Vol 375 (28-29) ◽  
pp. 2754-2758 ◽  
Author(s):  
Cheng-Yang Liu
Keyword(s):  
Photonic Crystal ◽  
Wavelength Division Multiplexing ◽  
Optical Characteristics ◽  
Two Dimensional ◽  
Wavelength Division ◽  
Silicon Based

scholarly journals High-efficiency and high-speed germanium photodetector enabled by multiresonant photonic crystal

Nanophotonics ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jinwen Song ◽  
Shuai Yuan ◽  
Chengcong Cui ◽  
Yuxi Wang ◽  
Zhiyong Li ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Quantum Efficiency ◽  
Wavelength Division Multiplexing ◽  
High Speed ◽  
High Efficiency ◽  
Normal Incidence ◽  
Potential Cost ◽  
Wavelength Division ◽  
Interconnect Systems ◽  
Silicon Based

AbstractHigh-efficiency and high-speed photodetectors with broadband responses are playing pivotal roles for wavelength-division multiplexing optical communications. Germanium photodetectors on silicon platforms exhibit potential cost advantage due to the compatibility for monolithic integration with silicon-based electronic circuits for signal amplification and processing. In this article, we report a normal incidence, germanium photodetector enabled by guided-mode resonances in photonic crystal, which successfully resolved the compromise between quantum efficiency, wavelength coverage and bandwidth requirement, a drawback usually faced by conventional photodetectors operating at normal incidence. The resonant photonic crystal structure is designed to support multiple resonances in the target wavelength range. With an intrinsic absorption layer thickness of 350 nm, the device achieved a high external quantum efficiency of 50% at 1550 nm, along with an enhancement around 300% for the entire C-band. Using a mesa diameter of 14 μm, the fabricated device exhibited a 3-dB bandwidth of 33 GHz and obtained clear eye diagrams at bit rate up to 56 Gbps. This work provides a promising method to design high-efficiency, high-speed, normal incidence germanium photodetectors for optical interconnect systems.

Wavelength Division Multiplexing and Demultiplexing using Photonic Crystal Multi Channel Add Drop Filter: A Review

2016 ◽  
Vol 5 (4) ◽  
pp. 29
Author(s):  
BHADRA ANAMIKA ◽  
SAHU VIKAS ◽  
SHRIVASTAVA SHARAD MOHAN ◽  
ANSHU ◽  
SANGHVI ANJALI S. ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Wavelength Division Multiplexing ◽  
Wavelength Division

Designing a photonic crystal fiber for an ultra-broadband parametric amplification in telecommunication region

2016 ◽  
Vol 25 (02) ◽  
pp. 1650023 ◽  
Author(s):  
Hassan Pakarzadeh ◽  
Mostafa Taghizadeh ◽  
Mohsen Hatami
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Wavelength Division Multiplexing ◽  
Wavelength Division ◽  
Crystal Fiber ◽  
Dispersion Wavelength ◽  
Zero Dispersion Wavelength ◽  
Highly Nonlinear ◽  
Fiber Optical ◽  
Fiber Optical Parametric Amplifier

A photonic crystal fiber (PCF) with a zero-dispersion wavelength (ZDW) in the telecommunication region is designed and an ultra-broadband fiber optical parametric amplifier (FOPA) based on such PCF is simulated. Results show that the PCF-based FOPA exhibits much higher gain with a very broad bandwidth (covering O- to U-band) in comparison with the highly nonlinear fiber (HNLF)-based FOPA. Also, the required fiber length and the input pump power are reduced for the PCF-based FOPA. The obtained results show the great potential of the PCF-based OPA for the telecommunication applications, e.g. amplification of wavelength-division multiplexing (WDM) signals.

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