NDLI: A Novel Colorless FPLD Packaged With TO-Can for 30-Gbit/s Preamplified 64-QAM-OFDM Transmission

Content Provider	IEEE Xplore Digital Library
Author	Cheng-Ting Tsai Min-Chi Cheng Yu-Chieh Chi Gong-Ru Lin
Copyright Year	1995
Abstract	A colorless FPLD directly modulated by the preamplified 64-QAM-OFDM at 30 Gbit/s is demonstrated with suppressed intensity noise and modulation distortion due to the enhanced signal-to-noise ratio (SNR) and reduced frequency chirp. To encode the colorless FPLD with 90% modulation depth when up shifting the dc bias to 2.5 times threshold of the colorless FPLD under injection-locking at 3 dBm, the preamplification of the electrical 64-QAM-OFDM data achieves the least SNR degradation and maintains data extinction. With the 64-QAM-OFDM subcarrier amplitude preleveled and preamplified encoding procedure, the colorless FPLD effectively promotes high on/off data extinction by suppressing the throughput power declination to <;5 dB and reducing the power-to-frequency slope to -0.7 dB/GHz within 5-GHz modulation bandwidth. The received bit-error-rate (BER) contour map of the preamplified 64-QAM-OFDM data carried by the colorless FPLD achieves its minimum of <;2.0 × 10^-3 and reveals large tolerances to the injection power and the biasing level. After preleveling the amplitude slope of the OFDM subcarriers, the error vector magnitude reduces to 8.6% and the SNR enhances to 21.2dB even after 25-km SMF transmission. The colorless FPLD encoded by preamplified and preleveled 64-QAM-OFDM data apparently optimizes both back-to-back and 25-km transmissions with corresponding BERs minimized to 1.1 × 10^-3 and 3.5 × 10^-3, respectively.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	144
Ending Page	156
Page Count	13
File Size	13973672
File Format	PDF
ISSN	1077260X
Volume Number	21
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Optical transmitters Signal to noise ratio Modulation Wavelength division multiplexing Bandwidth Gain optical fiber communication Fabry–Perot resonators semiconductor lasers injection-locked oscillators optical transmitters amplifiers optical modulation quadrature amplitude modulation frequency division multiplexing
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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