On the effect of the extinction ratio and the modulation index on optical up conversion using DSBSC modulation and transmitting over different fiber links

Optik ◽  
2016 ◽  
Vol 127 (24) ◽  
pp. 11845-11853 ◽  
Author(s):  
Dhananjay Patel ◽  
Vinay Kumar Singh ◽  
U.D. Dalal
Keyword(s):  
Extinction Ratio ◽  
Modulation Index ◽  
Fiber Links

Performance improvement of octupling millimeter wave generation through modulation index optimization

2018 ◽  
Vol 32 (34n36) ◽  
pp. 1840104
Author(s):  
Xiaogang Chen
Keyword(s):  
Performance Improvement ◽  
Millimeter Wave ◽  
Suppression Ratio ◽  
Extinction Ratio ◽  
Wave Generation ◽  
Modulation Index ◽  
Theoretical Derivation ◽  
Optical Generation ◽  
Spurious Suppression ◽  
Mach Zehnder Modulator

Performance improvement for optical generation of octupling millimeter wave signal based on dual-parallel Mach–Zehnder modulator (MZM) without optical filtering through optimization of modulation index of MZM is proposed. Theoretical derivation and simulation verification are provided for the octupling millimeter wave generation scheme, extinction ratio (EXT) of practical MZM is considered. The effect of imperfect EXT of commercially available MZM on optical sideband suppression ratio (OSSR) and RF spurious suppression ratio (RSSR) of the generated octupling optical millimeter wave is investigated. The results show that the performance of generated octupling millimeter wave with modulation index optimization is stable and insensitive to the EXT of MZM. While for the approach without modulation index enhancement, an additional filter is required to generate high quality optical millimeter wave.

Frequency Encoded All Optical Tri-state Logic Gates NOT and NAND Using Semiconductor Optical Amplifier Based Interferometric Switches

2020 ◽  
Vol 10 (4) ◽  
pp. 369-380
Author(s):  
K. Maji ◽  
K. Mukherjee ◽  
A. Raja
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Extinction Ratio ◽  
Optical Power ◽  
Logic Gates ◽  
Optical Amplifier ◽  
All Optical ◽  
State Frequency ◽  
Spontaneous Noise ◽  
First Time ◽  
Practical Feasibility

All optical tri-state frequency encoded logic gates NOT and NAND are proposed and numerically investigated using TOAD based interferometric switch for the first time to the best of our knowledge. The optical power spectrum, extinction ratio, contrast ration, and amplified spontaneous noise are calculated to analyze and confirm practical feasibility of the gates. The proposed device works for low switching energy and has high contrast and extinction ratio as indicated in this work.

Rapid Restoration Sequence of Fiber Links and Communication Paths from Catastrophic Failures

2016 ◽  
Vol E99.A (8) ◽  
pp. 1510-1517 ◽  
Author(s):  
Akihiro KADOHATA ◽  
Takafumi TANAKA ◽  
Wataru IMAJUKU ◽  
Fumikazu INUZUKA ◽  
Atsushi WATANABE
Keyword(s):  
Catastrophic Failures ◽  
Rapid Restoration ◽  
Fiber Links ◽  
Communication Paths

scholarly journals Performance analysis of carrier depletion silicon PIN phase shifter

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jesuwanth Sugesh Ramesh Gabriel ◽  
Sivasubramanian Arunagiri
Keyword(s):  
Performance Analysis ◽  
Bit Error Rate ◽  
Error Rate ◽  
Phase Shifter ◽  
Extinction Ratio ◽  
Fibre Length ◽  
Data Rate ◽  
Operating Voltage ◽  
Data Centre ◽  
Mach Zehnder Modulator

AbstractIn this paper, we report the performance of a carrier depletion Silicon PIN phase shifter with over layer of 130 nm. It is observed that an optimum intrinsic gap of 250 nm for a device length of 5 mm at 2 V, resulted in Extinction Ratio (ER) of 23.41 dB and Bit Error Rate (BER) of 1.00 × 10−7 is obtained for 50 Gbps. The phase shifter is also designed for length 2 mm with an intrinsic gap of 100 nm at an operating voltage <4 V. The study also reveals that the proposed design for Mach-Zehnder modulator operating at a data rate of 100 Gbps for the concentration of P = 7 × 1017 cm−3 and N = 5 × 1017 cm−3 gives better BER and phase performance. The proposed design was also analysed in an intra-data centre communication setup of fibre length 15 km.

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