A Phase Stable Short Pulses Generator Using an EAM and Phase Modulators for Application in 160-GBaud DQPSK Systems

Yu, Junsheng; Li, Y.; Wu, Jian; Zhang, F. Z.; Xu, Kun; Li, W.; Hong, Xiaobin; Lin, Jintong

doi:10.1109/lpt.2011.2172406

Cited by 20 publications

(4 citation statements)

References 6 publications

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“…After amplification in EDFA2, the two RZ-QPSK signals with different wavelength are separated with a dual-output optical filter (Finisar Waveshaper 4000 s). With the large amount of chirp added by the two PMs, and proper lengths of dispersion compensating fibers (DCF1 $30 m, and DCF2 $28 m), the optical pulses are further compressed to $2 ps [23]. The RZ-QPSK1 signal at 1550 nm is de-correlated with respect to RZ-QPSK2 via an optical delay line before they are recombined.…”

Section: Methodsmentioning

confidence: 99%

All-Optical Logic Gate for XOR Operation Between 40-Gbaud QPSK Tributaries in an Ultra-Short Silicon Nanowire

Yin

Zang

et al. 2014

IEEE Photonics J.

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We demonstrate an all-optical XOR logic gate for 40-Gbaud quadrature phaseshift keying (QPSK) tributaries in a silicon nanowire for the first time. The XOR logic operation is realized based on four-wave mixing (FWM) in the C-band. Experimental results show negligible power penalty at a bit error ratio (BER) of 10 À6 compared with the back-toback signals. The BER floor appears at BER of 10 À6 for both I and Q tributaries of the logic operation, and the main reasons are the optical signal-to-noise ratio (OSNR) deterioration caused by nonlinear loss due to free carrier absorption (FCA) and two-photon absorption (TPA) and the cross-phase modulation (XPM)-induced phase impairments.

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Section: Methodsmentioning

confidence: 99%

All-Optical Logic Gate for XOR Operation Between 40-Gbaud QPSK Tributaries in an Ultra-Short Silicon Nanowire

Yin

Zang

et al. 2014

IEEE Photonics J.

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“…Previously, an actively mode-locked laser has been commonly used for this purpose [8], [9]. However, it requires a sophisticated control circuitry for the stable operation [10]. There have been some efforts to mitigate this complexity by using a comb generator (typically made of an intensity modulator and a phase modulator) instead of a mode-locked laser [7], [11].…”

Section: Introductionmentioning

confidence: 99%

A Cost-Effective 2-Channel OTDM System Implemented With Sinusoidally Modulated Light Source

et al. 2020

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We propose to implement a 2-channel optical-time-division-multiplexed (OTDM) system for short-reach optical interconnects by using a sinusoidally modulated light source instead of a complicated mode-locked laser as an input pulse source. In this system, the OTDM signal is obtained by bit-interleaving two optical return-to-zero (RZ) signals generated by using the sinusoidally modulated light. We operate these RZ signals in the orthogonal in-phase and quadrature domains to avoid the unwanted beat components. After the transmission, the OTDM signal is detected by using single photodetector, and then processed by a 22 multiple-input multiple-output equalizer. For a demonstration, we generate 150-Gb/s OTDM signal operating in the 8-level pulse-amplitude modulated (PAM-8) format by using commercial LiNbO 3 Mach-Zehnder modulators and transmit this OTDM signal over 1.9 km of the standard single-mode fiber (SSMF). In addition, we fabricate the proposed OTDM transmitter in an integrated silicon-photonics chip and use it to demonstrate the transmission of the 64-Gb/s OTDM PAM-4 signal over 2.2 km of SSMF.

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“…Wu demonstrated 3.1 ps pulse generation at 10 GHz with three cascaded intensity modulators (IMs) and two phase modulators (PM) [5]. Ji reported 2.1 ps pulse generation at 40 GHz with an EAM and 2 PMs [6]. However, large insertion loss and increased complexity in configuration and in radio-frequency (RF) signal synchronization are intrinsic to this kind of scheme.…”

Section: Introductionmentioning

confidence: 99%

Multiwavelength 25-GHz picosecond pulse generation with phase modulation and double-side Mamyshev reshaping

Huo

Wang

et al. 2015

Appl. Opt.

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We demonstrate a simple, robust, and cost-effective method of generating high-speed multiwavelength picosecond optical pulses. This method is based on chirp compression of phase-modulated light, followed by nonlinear pulse compression and reshaping with a double-side Mamyshev reshaper. We show that this method becomes power efficient when the repetition rate is increased to 25 GHz. Wavelength-tunable optical pulses with a repetition rate of 25 GHz and pulse width of ∼2 ps, which can be temporally multiplexed to 100 GHz, are experimentally obtained over a large spectral range with moderate electrical and optical power. Simultaneous pulse generation on four wavelengths is demonstrated.

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A Phase Stable Short Pulses Generator Using an EAM and Phase Modulators for Application in 160-GBaud DQPSK Systems

Cited by 20 publications

References 6 publications

All-Optical Logic Gate for XOR Operation Between 40-Gbaud QPSK Tributaries in an Ultra-Short Silicon Nanowire

All-Optical Logic Gate for XOR Operation Between 40-Gbaud QPSK Tributaries in an Ultra-Short Silicon Nanowire

A Cost-Effective 2-Channel OTDM System Implemented With Sinusoidally Modulated Light Source

Multiwavelength 25-GHz picosecond pulse generation with phase modulation and double-side Mamyshev reshaping

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