Technique for direct measurement of single-mode fiber chromatic dispersion

1987 ◽  
Vol 5 (9) ◽  
pp. 1207-1213 ◽  
Author(s):  
A. Barlow ◽  
R. Jones ◽  
K. Forsyth
Keyword(s):  
Direct Measurement ◽  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber

scholarly journals Direct measurement of the nonlinear phase shift between the orthogonally polarized states of a single-mode fiber

1985 ◽  
Vol 10 (2) ◽  
pp. 89 ◽  
Author(s):  
B. Crosignani ◽  
P. Di Porto ◽  
S. Piazzolla ◽  
P. Spano
Keyword(s):  
Phase Shift ◽  
Direct Measurement ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Nonlinear Phase Shift ◽  
Nonlinear Phase

Direct measurement of chromatic dispersion in single-mode fibres using streak camera

1985 ◽  
Vol 21 (12) ◽  
pp. 524-525 ◽  
Author(s):  
K. Mochizuki ◽  
M. Fujise ◽  
H. Suzuki ◽  
M. Watanabe ◽  
M. Koishi ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Streak Camera ◽  
Chromatic Dispersion ◽  
Single Mode

scholarly journals Frequency-Octupling Millimeter-Wave Optical Vector Signal Generation via an I/Q Modulator-Based Sagnac Loop

Symmetry ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 84
Author(s):  
Zhixian Yang ◽  
Kun Qu ◽  
Xiang Liu
Keyword(s):  
Millimeter Wave ◽  
Wave Vector ◽  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Optical Fields ◽  
Wave Nature ◽  
Shift Keying ◽  
Frequency Octupling ◽  
Vector Signal

A new method for generating frequency-octupling millimeter-wave (mm-wave) vector signals in optical fields via a Sagnac loop is proposed. In this scheme, two orthogonally polarized fourth order sidebands can be obtained through an integrated dual-polarization quadrature phase shift keying (DP-QPSK) modulator. The two optical sidebands are sent into an I/Q modulator-based Sagnac loop. The I/Q modulator is modulated by a 16QAM baseband signal. In the Sagnac loop, one of the sidebands is modulated by the baseband vector signal along one direction, and the other sideband is unmodulated along the opposite direction because the I/Q modulator has the traveling-wave nature. Thanks to this modulation property and the symmetrical structure of the Sagnac loop, a frequency-octupling mm-wave vector signal that is free from interband beating and fiber chromatic dispersion interference can be generated by the photodetector (PD). After simulating a 20 km single-mode fiber (SMF) transmission, the generated frequency-octupling vector signal was good in function.

scholarly journals Multi-Twin-SSB Modulation with Direct Detection Based on Kramers–Kronig Scheme for Long-Reach PON Downstream

2019 ◽  
Vol 9 (4) ◽  
pp. 748 ◽  
Author(s):  
Xiang Gao ◽  
Yuancheng Cai ◽  
Bo Xu ◽  
Xiaoling Zhang ◽  
Kun Qiu
Keyword(s):  
Optical Networks ◽  
Forward Error Correction ◽  
Direct Detection ◽  
Chromatic Dispersion ◽  
Optical Network ◽  
Single Mode ◽  
System Optimization ◽  
Single Mode Fiber ◽  
High Data ◽  
Multi Band

As the demand for high data volumes keeps increasing in optical access networks, transmission capacities and distance are becoming bottlenecks for passive optical networks (PONs). To solve this problem, a novel scheme based on multi-twin single sideband (SSB) modulation with direct detection is proposed and investigated in this paper. At the central office, two SSB signals are generated simultaneously with the same digital-to-analog converters (DACs). The twin-SSB signal is not only robust against frequency selected power fading introduced by chromatic dispersion (CD), but also improves the spectral efficiency (SE). By combining a twin-SSB technique with multi-band carrier-less amplitude/phase modulation (multi-CAP), different optical network units (ONUs) can be supported by flexible multi-band allocation based on software-reconfigurable optical transceivers. The Kramers–Kronig (KK) scheme is adopted on the ONU side to effectively mitigate the signal–signal beat interference (SSBI) induced by the square-law detection. The proposed system is extensively studied and validated with four sub-bands using 50 Gbps 16 quadrature amplitude modulation (QAM) modulation for each sub-band using numerical simulations. Digital pre-equalization is introduced at the transmitter-side to balance the performance of different ONUs. After system optimization, a bit error rate (BER) threshold for hard decision forward error correction (HD-FEC) code with 7% redundancy ratio (BER = 3.8 × 10−3) can be reached for all ONUs over 50-km standard single-mode fiber.

Chromatic dispersion measurements over a 50-km single-mode fiber

1985 ◽  
Vol 3 (1) ◽  
pp. 51-54 ◽  
Author(s):  
T. Horiguchi ◽  
M. Tokuda ◽  
Y. Negishi
Keyword(s):  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber
Sign in / Sign up

Export Citation Format

Share Document