Directly-Modulated Self-Seeding Reflective SOAs as Colorless Transmitters for WDM Passive Optical Networks

Wong, Elaine; Lee, Ka Lun; Anderson, Trevor

doi:10.1109/ofc.2006.216082

Cited by 18 publications

(10 citation statements)

References 4 publications

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“…Currently, some colourless transmitters are demonstrated using tunable lasers, modulation of sliced external broadband light source (BLS) or re-modulation of downstream signal light [2][3] These solutions encounters poor performance, large footprint of BLS components as well as relatively high cost. Other ideas like Self-seeding RSOA scheme were proposed later on [4]. In this paper, a novel WDM-PON with self-seeded RSOAs both in downstream and upstream is demonstrated and system performance with 32 and 16 channels is evaluated, showing that it meets carrier level requirements for the first time.…”

Section: Introductionmentioning

confidence: 93%

System evaluation of economic 16/32chs 1.25Gbps WDM-PON with self-seeded RSOA

Ma¹,

Lin

Yu³

et al. 2011

10th International Conference on Optical Communications and Networks (ICOCN 2011)

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Section: Introductionmentioning

confidence: 93%

System evaluation of economic 16/32chs 1.25Gbps WDM-PON with self-seeded RSOA

Ma¹,

Lin

Yu³

et al. 2011

10th International Conference on Optical Communications and Networks (ICOCN 2011)

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“…However, due to the Rayleigh backscattering effect high data rates are unable to be transmitted at the upstream. Some earlier works have shown successful transmission of lower data rates in downlink as well as in the uplink [9][10][11][12]. Therefore some measures should be taken to improve the design of the bidirectional WDM-PON to transmit high data rates in the downlink and uplink over a long-haul single mode fiber (SMF).…”

Section: Introductionmentioning

confidence: 99%

RSOA-Based Full-Duplex WDM-PON for 20 Gbps Transmission in Two Channels Over a Long-Haul SMF Using External Modulation Scheme

Das

Patra

2015

Journal of Optical Communications

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We have proposed and demonstrated a fullduplex wavelength division multiplexed passive optical network (WDM-PON) configuration based on reflective semiconductor optical amplifier (RSOA). RSOA is used for reusing and remodulate the downlink signal in the uplink. We have used external modulation scheme for transmitting 20 Gbps data rates in two channels over a 40 km single mode fiber (SMF). The uplink and the downlink performances are checked by the bit error rate (BER) and the eye diagrams.

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“…Wavelength-division-multiplexing passive optical network (WDM-PON) has been regarded as a promising solution to meet access bandwidth requirements for delivering gigabits/sec data and video services to large number of users [1][2][3][4][5]. Due to the exponential growth of Internet traffic and bandwidth-hungry new services, the WDM-PON access networks and short-reach (~20km) optical links will migrate to 40 Gb/s per channel in the near future [6][7].…”

Section: ) Introductionmentioning

confidence: 99%

“…In this paper, we will present and experimentally demonstrate a novel WDM-PON architecture to transmit directly modulated 42.8-Gb/s downstream signals over 20-km SMF-28 without dispersion compensation. We also achieve upstream transmission based on wavelength reuse for upstream signals to further reduce the cost and simply the configuration of the WDM PON [1][2][3][4][5].…”

Section: ) Introductionmentioning

confidence: 99%

40-Gb/s Wavelength-Division-Multiplexing Passive Optical Network with Centralized Lightwave Source

Jia

et al. 2008

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference

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We propose and experimentally demonstrate a 40-Gb/s wavelength-divisionmultiplexing passive optical network (WDM-PON) with a centralized directly-modulated laser (DML) source for the first time. In the central office (CO), a DML operating at 42.8-Gb/s with high driven bias and low extinction ratio (ER) is employed for carrying downstream data. In the remote node (RN) or optical network unit (ONU), a narrow-band optical filter is used to re-shape the pulse and optical spectrum for increasing the ER of DML signals and re-set phase correlation between the adjacent bits to increase the dispersion tolerance. On the other hand, the low-ER DML signals before the optical filter are remodulated by an external intensity modulator driven by the upstream signal and then sent back to the CO. In this way, a 40-Gb/s centralized WDM-PON access system with low-cost configuration is realized. OCIS codes: (060.0600) Fiber optics and optical communications; (060.4250) Networks 1) IntroductionWavelength-division-multiplexing passive optical network (WDM-PON) has been regarded as a promising solution to meet access bandwidth requirements for delivering gigabits/sec data and video services to large number of users [1][2][3][4][5]. Due to the exponential growth of Internet traffic and bandwidth-hungry new services, the WDM-PON access networks and short-reach (~20km) optical links will migrate to 40 Gb/s per channel in the near future [6][7]. Unlike long haul and metro network where higher cost can be better tolerated and absorbed by the service and volume, access and short-reach applications require low-hardware cost and low-operation expense to make the transmission technology attractive and practical. A directly modulated laser (DML) can be used to reduce the system cost because of no need for expensive external modulator. For high-speed optical links, such as 40 Gb/s, fiber dispersion limits the transmission distance to a few kilometers. Therefore, the dispersion compensation will be needed for 40-Gb/s systems in a WDM-PON with a range up to 20km. However, dispersion compensation not only add cost and power consumption of the network, but reduce the flexibility since the fiber length from the optical network unit (ONU) to the central office (CO) is variable, therefore, using dispersion compensation in a WDM-PON is not practical solution. Typically, a regular 40-Gb DML signals can not reach longer than 2.5-km standard single mode fiber (SMF-28) because there is a large frequency chirp [6][7]. Currently, a chirp-managed laser (CML) can provide a good alternative [8] to be suitable for WDM-PON access systems. In order to support higher tolerance to the dispersion, much higher driven bias compared to the conventional direct modulation is employed to a high-speed DFB laser, the additional benefits of the higher bias are high output power, wide modulation bandwidth, low timing jitter and suppressed transient chirp. The directly modulated signals have low extinction ratio (ER) and an accompanying adiabatic chirp. An optical spectrum reshapi...

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Directly-Modulated Self-Seeding Reflective SOAs as Colorless Transmitters for WDM Passive Optical Networks

Abstract: We present the first demonstration of directly-modulated self-seeding reflective semiconductor optical amplifiers as colorless transmitters in a WDM-PON, eliminating centralized broadband sources, active temperature control and external modulators.

Cited by 18 publications

References 4 publications

System evaluation of economic 16/32chs 1.25Gbps WDM-PON with self-seeded RSOA

System evaluation of economic 16/32chs 1.25Gbps WDM-PON with self-seeded RSOA

RSOA-Based Full-Duplex WDM-PON for 20 Gbps Transmission in Two Channels Over a Long-Haul SMF Using External Modulation Scheme

40-Gb/s Wavelength-Division-Multiplexing Passive Optical Network with Centralized Lightwave Source

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