Specific Jacket SMA-Connected TO-Can Package FPLD Transmitter With Direct Modulation Bandwidth Beyond 6 GHz for 256-QAM Single or Multisubcarrier OOFDM up to 15 Gb/s

Chi, Yu‐Chieh; Li, Yicheng; Lin, Gong‐Ru

doi:10.1109/jlt.2012.2229461

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…Such a colorless FPLD not only enhances the external injection efficiency but also covers multiple DWDM channels, which is quite suitable to construct the cost effective light source in the ONUs [24]. Unfortunately, the modulation bandwidth of the free-running colorless FPLD with a typical TO-can package is inherently limited at 6 GHz [25]. Although the frequency response of such a colorless FPLD can be effectively extended by intense injection-locking with the coherent master laser [26], the over-injection usually induces a roll-off effect associated with a serious dip occurred in the modulation spectrum at lowfrequency region [27], [28].…”

Section: Introductionmentioning

confidence: 99%

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

Tsai

Cheng

Chi

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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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 21.2 dB 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.

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Section: Introductionmentioning

confidence: 99%

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

Tsai

Cheng

Chi

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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“…In this OFDM-PON, different OFDM subcarriers can be assigned to different optical network units (ONUs). As a result, the network capacity can be aggregated and de-aggregated electronically on an optical carrier [7,8]. O-OFDM is highly spectral-efficient and highly chromatic-dispersion tolerant; hence it is suitable for longreach (LR) or extended-reach (ER) PON [9].…”

Section: Introductionmentioning

confidence: 99%

Wired and wireless convergent extended-reach optical access network using direct-detection of all-optical OFDM super-channel signal

et al. 2014

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We propose and demonstrate the feasibility of using all-optical orthogonal frequency division multiplexing (AO-OFDM) for the convergent optical wired and wireless access networks. AO-OFDM relies on all-optically generated orthogonal subcarriers; hence, high data rate (> 100 Gb/s) can be easily achieved without hitting the speed limit of electronic digital-to-analog and analog-to-digital converters (DAC/ADC). A proof-of-concept convergent access network using AO-OFDM super-channel (SC) is demonstrated supporting 40 - 100 Gb/s wired and gigabit/s 100 GHz millimeter-wave (MMW) ROF transmissions.

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“…More recently, the back-to-back optical OFDM transmission with the aforementioned long-cavity colorless WRC-FPLD under coherent injection and direct modulation [30] has preliminarily emerged to achieve a total bit-rate as high as 20 Gbit/s [28,31]. When comparing to the ordinary multiple mode laser FPLD, the WRC-FPLD with long cavity (>600 μm) and weak end-facet reflection (<1%) is designed to increase the mode density and to facilitate the injection-locking efficiency.…”

Section: Introductionmentioning

confidence: 99%

Coherently wavelength injection-locking a 600-μm long cavity colorless laser diode for 16-QAM OFDM at 12 Gbit/s over 25-km SMF

Chi

Cheng

et al. 2013

Opt. Express

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The coherent injection-locking and directly modulation of a long-cavity colorless laser diode with 1% end-facet reflectance and weak-resonant longitudinal modes is employed as an universal optical transmitter to demonstrated for optical 16-QAM OFDM transmission at 12 Gbit/s over 25 km in a DWDM-PON system. The optimized bias current of 30 mA (~1.5Ith) with corresponding extinction ratio (ER) of 6 dB and the external injection power of -9 dBm is (are) required for such a wavelength-locked universal transmitter to carry the 16-QAM and 122-subcarrier formatted OFDM and data-stream. By increasing external injection-locking from -9 dBm to 0 dBm, the peak-to-peak chirp of the OFDM data stream reduces from 7.7 to 5.4 GHz. The side mode suppression ratio (SMSR) of up to 50 dB is achieved with wider detuning range between -0.5 nm to 2.0 nm under an injection power of 0 dBm. By modulating such a colorless laser diode with an OFDM data stream of 122 subcarriers at a central carrier frequency of 1.5625 GHz and a total bandwidth of 3 GHz, the transmission data rate of up to 12 Gbit/s in standard single-mode fiber over 25 km is demonstrated to achieve an error vector magnitude (EVM) of 5.435%. Such a universal colorless DWDM-PON transmitter can deliver the optical OFDM data-stream at 12 Gbit/s QAM-OFDM data after 25-km transmission with a receiving power sensitivity of -7 dBm at BER of 3.6 × 10(-7) when pre-amplifying the OFDM data by 5 dB.

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Specific Jacket SMA-Connected TO-Can Package FPLD Transmitter With Direct Modulation Bandwidth Beyond 6 GHz for 256-QAM Single or Multisubcarrier OOFDM up to 15 Gb/s

Cited by 10 publications

References 23 publications

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

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

Wired and wireless convergent extended-reach optical access network using direct-detection of all-optical OFDM super-channel signal

Coherently wavelength injection-locking a 600-μm long cavity colorless laser diode for 16-QAM OFDM at 12 Gbit/s over 25-km SMF

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