Multichannel FSK experiment using an optical amplifier repeater and wavelength tunable direct detection receiver

1990 ◽  
Vol 26 (22) ◽  
pp. 1863
Author(s):  
D.J. Malyon ◽  
W.A. Stallard
Keyword(s):  
Direct Detection ◽  
Optical Amplifier ◽  
Wavelength Tunable

scholarly journals Programmable Adaptive S-BVTs for Future Optical Metro Networks Adopting SOA-Based Switching Nodes

2018 ◽  
Author(s):  
Laura Martín González ◽  
Sjoerd van der Heide ◽  
Xuwei Xue ◽  
John van Weerdenburg ◽  
Nicola Calabretta ◽  
...  
Keyword(s):  
Optical Networks ◽  
Direct Detection ◽  
Digital Signal ◽  
Cost Effective ◽  
Optical Amplifier ◽  
Limiting Factor ◽  
Bit Rate ◽  
Discrete Multitone ◽  
Key Factor ◽  
Metro Networks

Adaptive Sliceable-Bandwidth Variable Transceivers (S-BVTs) are key enabler for future optical networks. In particular, those based on Discrete MultiTone (DMT) modulation and Direct Detection (DD) can be considered a flexible solution suitable to address the cost efficiency requirement of optical metro networks. In this paper, we propose to use this cost-effective S-BVT option/implementation in optical metro networks adopting switching nodes based on Semiconductor Optical Amplifier (SOA) technology. Bit loading (BL) and power loading (PL) algorithms are applied to the Digital Signal Processing (DSP) modules, to maximize the performance and/or the capacity as well as enhance the flexibility and adaptability of the system. Our analysis considers switching nodes based on SOAs with and without filtering elements and fiber spans of 25 km. We present the results up to 100 km, with and without SOA-based nodes. Firstly, we analyze the adaptive BVT transmission using the Margin Adaptive (MA) BL/PL algorithm at a fixed bit rate of 28 Gb/s. The possibility of controlling the SOAs current is a key factor to face the transmission impairments due to the fiber and the filtering elements. We also analyze the system considering Rate Adaptive (RA) transmission at a fixed target BER of 3.8·10−3, showing that a maximum capacity above 34 Gb/s can be achieved for a single span of 25 km. Although the cascading of filtering elements still constitutes a limiting factor, we show that an improvement of the net bit rate performance can be obtained thanks to the combined use of S-BVT and SOA technology at the switching nodes, resulting in a promising approach for designing future optical metro networks.

SEMICONDUCTOR WAVELENGTH TUNABLE OPTICAL FILTERS

1993 ◽  
Vol 02 (04) ◽  
pp. 643-659 ◽  
Author(s):  
T. NUMAI
Keyword(s):  
Wavelength Division Multiplexing ◽  
Direct Detection ◽  
Optical Filters ◽  
Switching Systems ◽  
Switching Speed ◽  
Photonic Switching ◽  
Detection Scheme ◽  
Wavelength Division ◽  
Wavelength Tunable ◽  
Tunable Optical Filters

Wavelength-division multiplexing (WDM) lightwave transmission systems and wavelength-division (WD) photonic switching systems are attractive for improvement in line capacity for lightwave telecommunication services, because they utilize a huge wavelength (frequency) domain as signal channels. Wavelength tunable optical filters are key devices for these WDM and WD systems in direct detection scheme. In particular, semiconductor wavelength tunable optical filters are suitable for monolithic integration with photonic devices such as semiconductor lasers, switches and detectors. Also, the switching speed of wavelength is faster than that of other optical filters. This paper briefly summarizes the state-of-the-art semiconductor wavelength tunable optical filters and their applications to WD photonic switching systems.

Wavelength-tunable 10 GHz actively harmonic mode-locked fiber laser based on semiconductor optical amplifier

2015 ◽  
Vol 121 (4) ◽  
pp. 517-521 ◽  
Author(s):  
Yan Mao ◽  
Xinglin Tong ◽  
Zhiqiang Wang ◽  
Li Zhan ◽  
Pan Hu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Harmonic Mode ◽  
Wavelength Tunable
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