scholarly journals Programmable High-Resolution Spectral Processor in C-band Enabled by Low-Cost Compact Light Paths

Photonics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 127
Author(s):  
Zichen Liu ◽  
Chao Li ◽  
Jin Tao ◽  
Shaohua Yu
Keyword(s):  
High Resolution ◽  
Wavelength Division Multiplexing ◽  
Optical Transmission ◽  
Frequency Comb ◽  
Low Cost ◽  
Optical Frequency ◽  
Transmission Networks ◽  
Wavelength Division ◽  
Liquid Crystal On Silicon ◽  
Comb Generation

The flexible photonics spectral processor (PSP) is an indispensable element for elastic optical transmission networks that adopt wavelength division multiplexing (WDM) technology. The resolution and system cost are two vital metrics when developing a PSP. In this paper, a high-resolution 1 × 6 programmable PSP is investigated and experimentally demonstrated by using low-cost compact spatial light paths, which is enabled by a 2 K (1080p) liquid crystal on silicon (LCoS) and two cascaded transmission gratings with a 1000 line/mm resolution. For each wavelength channel, the filtering bandwidth and power attenuation can be manipulated independently. The total insertion loss (IL) for six ports is in the range of 5.9~9.4 dB over the full C-band. The achieved 3-dB bandwidths are able to adjust from 6.2 GHz to 5 THz. Furthermore, multiple system experiments utilizing the proposed PSP, such as flexible spectral shaping and optical frequency comb generation, are carried out to validate the feasibility for the WDM systems.

scholarly journals Multi-wavelength 128 Gbit/s/λ PAM4 optical transmission enabled by a 100 GHz quantum dot mode-locked optical frequency comb

2021 ◽  
Author(s):  
Shujie Pan ◽  
Hongguang Zhang ◽  
Zizhuo Liu ◽  
Mengya Liao ◽  
Mingchu Tang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Wavelength Division Multiplexing ◽  
High Speed ◽  
High Efficiency ◽  
Frequency Comb ◽  
Low Cost ◽  
Pulse Amplitude ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Light Sources

Abstract Semiconductor mode-locked lasers (MLLs) with extremely high repetition rates are promising optical frequency comb (OFC) sources for their usage as compact, high-efficiency, and low-cost light sources in high-speed dense wavelength-division multiplexing (DWDM) transmissions. The fully exploited conventional C- and L- bands require the research on O-band to fulfil the transmission capacity of the current photonic networks. In this work, we present a passive two-section InAs/InGaAs quantum-dot (QD) MLL-based OFC with a fundamental repetition rate of ~100 GHz operating at O-band wavelength range. The specially designed device favours the generation of nearly Fourier-transform-limited pulses in the entire test range by only pumping the gain section while with the absorber unbiased. The typical integrated relative intensity noise (RIN) of the whole spectrum and a single tone are -152 dB/Hz and -137 dB/Hz in the range of 100 MHz to 10 GHz, respectively. Back-to-back (B2B) data transmissions for 7 selected tones have been realised by employing a 64 Gbaud four-level pulse amplitude modulation format (PAM-4). The demonstrated performance shows the feasibility of the InAs QD MLLs as a simple structure, easy operation, and low power consumption OFC sources for high-speed fibre-optic communications.

Demonstration of optical frequency comb generation using four-wave mixing in highly nonlinear fiber

Optik ◽  
2021 ◽  
pp. 166948
Author(s):  
Vishal Sharma ◽  
Surinder Singh ◽  
Lovkesh ◽  
Elena A. Anashkina ◽  
Alexey V. Andrianov
Keyword(s):  
Frequency Comb ◽  
Four Wave Mixing ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Wave Mixing ◽  
Highly Nonlinear Fiber ◽  
Highly Nonlinear ◽  
Nonlinear Fiber ◽  
Comb Generation

scholarly journals Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

2012 ◽  
Vol 48 (10) ◽  
pp. 1327-1338 ◽  
Author(s):  
Ehsan Sooudi ◽  
Stylianos Sygletos ◽  
Andrew D. Ellis ◽  
Guillaume Huyet ◽  
John G. McInerney ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Injection Locking ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Dual Mode ◽  
Quantum Dash ◽  
Comb Generation ◽  
Mode Locked Lasers
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