Distinct regeneration capability of 40 Gbit/s signal impaired with amplitude noise and timing jitter using SOA-based all-optical polarization discriminated switch

Tsurusawa, M.; Nishimura, Kosuke; Inohara, Ryo; Usami, M.

doi:10.1109/ofc.2002.1036221

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…For more efficiency, SOA-based all optical interferometric switch is a promising candidate. We have evaluated an optical 3R regenerator utilizing SOA-based polarization discriminating symmetric Mach-Zehnder switch (UNI), and confirmed a large tolerance against various impairment factors such as OSNR degradation, timing jitter, deviation of launched signal power and pulse width broadening [25,26]. The operation principle of UNI switch has been previously reported in ref.…”

Section: R Regeneration For Cs-rz Formatsupporting

confidence: 54%

All-optical devices and signal processing for all photonic network

2005

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GMPLS-controlled photonic network utilizing optical cross-connect in conjunction with WDM equipment will soon be realized in core network to partly eliminate OEO terminations in cut-through traffic. In the next step, all photonic endto-end connection/switching is emerging technology for realizing higher bit-rate transmission with finer datum granularity, and reducing both size and power consumption of network nodes to establish truly transparent and flexible network. In this presentation, all optical signal processing devices as wavelength converters and regenerators for such future all photonic networks will be reviewed.

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Section: R Regeneration For Cs-rz Formatsupporting

confidence: 54%

All-optical devices and signal processing for all photonic network

2005

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“…Recently, several reports with this objective have been presented. [23,30] In [31], the transparent assist light injected UNI was confirmed to have relatively large tolerances against input power variations of 4.2 dB, timing jitter of 10 ps, and pulse width variations at 40 Gbit/s operation. These results prove that the UNI has the potential for an all-optical regenerator in the actual transmission systems and photonic networks.…”

Section: Transmission Experiments By Recirculating Loop With 2-stage Unimentioning

confidence: 93%

Optical nonlinearities in semiconductor optical amplifier and electro-absorption modulator: their applications to all-optical regeneration

Usami

Nishimura

2005

J Optic Comm Rep

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Semiconductors have large optical nonlinearity with response speed in the several tens of picosecond range, making them ideal use as all-optical regenerators and wavelength converters. We theoretically and experimentally investigated optical nonlinearities induced by carrier dynamics both in forward biased semiconductor waveguide (SOA) and in reverse biased semiconductor waveguide (EAM). We made a detailed theoretical study of carrier dynamics in semiconductor waveguides by using the newly developed time-dependent transfer matrix method. To confirm the simulation results, we propose utilizing a polarization discriminating delayed interferometer (PD-DI) configuration as a simple technique for measuring optical nonlinearities such as cross gain modulation (XGM), cross absorption modulation (XAM), and cross phase modulation (XPM). In the first part of the paper, we reviewed SOA-based regenerators. As expected from the simulation results, we confirmed that injection of the transparent assist light was very effective in reducing of the SOA gain recovery time of down to a few tens of picoseconds. We further demonstrated 40 Gbit/s regeneration using an SOA-one-arm MZI (so-called UNI) configuration. The superior regeneration capability of two-stage UNI was successfully confirmed by a recirculating loop experiment up to 30,000 km with 150 regenerations. In the latter part of the paper, we reviewed all-optical regenerators using EAM. A bit-synchronized rf-driven XAM 3R regenerator consisting of only one EAM for both gating and timing correction was demonstrated at 20 Gbit/s. An EAM in conjunction with delayed interferometer configuration, which utilizes XPM as well as XAM in the EAM, has structurral simplicity and fast regeneration operability up to 100 Gbit/s. The fast response of EAM allows the optical regeneration with a small pattern word effect. 498Masashi Usami and Kohsuke Nishimura

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“…We have evaluated an optical 3R regenerator utilizing SOA-based polarization discriminating symmetric Mach-Zehnder switch (PD-SMZ, or UNI: Ultrafast Non-linear Interferometer), and confirmed a large tolerance against various impairment factors such as OSNR degradation, timing jitter, deviation of launched signal power and pulse width broadening [9,10].…”

Section: Introductionmentioning

confidence: 91%

All-optical 3R regeneration using SOA-based polarization discriminating switch

2006

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Optical 3R regeneration is of great interest due to its ability to enhance the system margins in photonic network, because it enables to reset transmission impairments induced by channel interaction distortion, accumulation of amplified spontaneous emission (ASE) noise, chromatic dispersion and non-linearities of optical fibers and so forth. In comparison to electrical 3R regenerators, optical 3R regenerators are expected to be less complex and require less highspeed electronic components owing to simple optical signal processing, leading to small footprint, low power consumption and low cost. In this paper, we describe an optical 3R regenerator operable with carrier-suppressed returnto-zero (CS-RZ) modulation format which will be employed in dense WDM (DWDM) network to increase the efficiency of bandwidth utilization. We have demonstrated 3R regenerative transmission using 100 GHz-spacing 40 Gbit/s 5 WDM CS-RZ signals so as to confirm that a DWDM filtering effect can be drastically mitigated by the 3R regenerator.

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Distinct regeneration capability of 40 Gbit/s signal impaired with amplitude noise and timing jitter using SOA-based all-optical polarization discriminated switch

Cited by 6 publications

References 6 publications

All-optical devices and signal processing for all photonic network

All-optical devices and signal processing for all photonic network

Optical nonlinearities in semiconductor optical amplifier and electro-absorption modulator: their applications to all-optical regeneration

All-optical 3R regeneration using SOA-based polarization discriminating switch

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