Design Issues in RSOA-based WDM PON

Takushima, Y.; Cho, K.Y.; Chung, Yon Dohn

doi:10.1109/ipgc.2008.4781413

Cited by 17 publications

(11 citation statements)

References 17 publications

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“…Not only does it obviate the need for costly optical amplifiers at the subscribers' premises but also helps to secure sufficient power budget for the upstream transmission. However, the modulation bandwidth of the RSOA is typically limited to <3 GHz due to the carrier lifetime in the active layer, which in turn, limits the upstream data rate to 1.25 Gbit/s [14,15]. Recently, there have been several attempts to operate these low-bandwidth devices at 10 Gbit/s and beyond, including advanced modulation formats [16][17][18][19], post detection electrical signal processing [20][21][22], and offset optical filtering together with electrical equalization [23].…”

Section: Introductionmentioning

confidence: 99%

10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG

Tawade¹

2014

Journal of Optical Communications

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This paper presents Long Reach Wavelength Division Multiplexing Passive Optical Network (WDM-PON) system capable of delivering downstream 10 Gbit/s data and upstream 10 Gbit/s data on a single wavelength. The optical source for downstream data and upstream data is CW laser at central office and reflective semiconductor optical amplifier (RSOA) at each optical network unit. The use of dispersion management for both up and downstream transmission removes the error floor owing to the chromatic dispersion induced excess intensity noise. It has also been experimentally confirmed that both pre and post-dispersion compensating schemes are effective ways to suppress the intensity noise. Error free bidirectional transmission over 35 km is demonstrated by using Erbium-doped fiber amplifiers at the RN and at central office. Optical power budgets 14.565 dB and 29.171 dB are achieved for downstream performance and upstream performance respectively. This paper demonstrates an effective mitigation of Rayleigh backscattered noise for upstream data and downstream data and also demonstrates that receiver sensitivity is improved for upstream and downstream data. Bit error rate were measured to demonstrate the proposed scheme. In this paper long reach and large data service aspects of a WDM-PON is presented.Keywords: wavelength division multiplexing passive optical network (WDM-PON), reflective semiconductor optical amplifier (RSOA), Erbium doped fiber amplifier (EDFA), single mode fiber (SMF), photo detector (PD), arrayed waveguide grating (AWG), attenuator (ATT)

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Section: Introductionmentioning

confidence: 99%

10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG

Tawade¹

2014

Journal of Optical Communications

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“…However, the modulation bandwidth of RSOA is determined by the carrier lifetime in the active layer and typically limited to GHz [1]. Therefore, previous demonstrations are mostly carried out at Gb/s.…”

Section: Introductionmentioning

confidence: 99%

Transmission of 10-Gb/s Directly Modulated RSOA Signals in Single-Fiber Loopback WDM PONs

Kim

2011

IEEE Photon. Technol. Lett.

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We demonstrate the transmission of 10-Gb/s upstream signals over 20-km fiber using a 1.3-GHz-bandwidth reflective semiconductor optical amplifier and a 40-ps delay interferometer (DI) in a loopback configured wavelength-division-multiplexed (WDM) passive optical network. We show that a single DI can be used in a set-and-forget mode to equalize 34 WDM channels anchored at the 100-GHz spaced ITU grid, without any help of postdetection electronic processing.Index Terms-Equalizers, modulation, passive optical network (PON), semiconductor optical amplifier (SOA), wavelength-division multiplexing (WDM).

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“…R EFLECTIVE semiconductor optical amplifiers (RSOAs), thanks to their cost-effectiveness, color-free operation, and simultaneous amplification and modulation of seed light, have been under intensive research for upstream optical transmitters for wavelength-division multiplexing (WDM) passive optical networks (PONs) [1]- [9]. However, the modulation bandwidth of this semiconductor device is limited by the carrier lifetime and typically less than 3 GHz [1].…”

Section: Introductionmentioning

confidence: 99%

“…However, the modulation bandwidth of this semiconductor device is limited by the carrier lifetime and typically less than 3 GHz [1]. To accommodate 10-Gb/s signals over this highly band-limited device, postdetection signal processing such as electrical equalization and maximum-likelihood sequence estimation has been previously exploited [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

A Dual-Detector Optical Receiver for WDM PON Utilizing Directly Modulated RSOAs and Delay Interferometers

Kim

2011

IEEE Photon. Technol. Lett.

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We propose and demonstrate a dual-detector optical receiver for directly modulated reflective semiconductor optical amplifier (RSOA)-based transmitters employing a delay interferometer as an optical equalizer at the receiver. We show through experiment that the dual-detector receiver not only improves the receiver sensitivity but also lowers the error floor by widening the eye opening at the receiver. We also demonstrate upstream transmission of a 10-Gb/s RSOA signal over a 40-km single-fiber loopback configured network.Index Terms-Chirp modulation, optical receivers, passive optical network (PON), semiconductor optical amplifier (SOA), wavelength-division multiplexing (WDM).

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Design Issues in RSOA-based WDM PON

Cited by 17 publications

References 17 publications

10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG

10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG

Transmission of 10-Gb/s Directly Modulated RSOA Signals in Single-Fiber Loopback WDM PONs

A Dual-Detector Optical Receiver for WDM PON Utilizing Directly Modulated RSOAs and Delay Interferometers

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