OBI noise reduction using gain saturated SOA in reflective SOA based WDM/SCM-PON optical links

Won, Yong-Yuk; Kwon, Hyuk-Choon; Han, Sang-Kook; Jung, Eui-Suk; Kim, B.-W.

doi:10.1049/el:20061202

Cited by 14 publications

(11 citation statements)

References 5 publications

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“…It has been shown in [10] and [11] that a gain-saturated SOA can be used to remove optical beat noise and intensity noise in passive optical networks and wavelength-division-multiplexed systems, respectively. The optical gain of the SOA as a function of input power is shown in Fig.…”

Section: Semiconductor Optical Amplifiermentioning

confidence: 99%

Reduction of MAI and Beat Noise in OCDMA Systems Using an SA-SOA-TPA-Based Receiver

Dexter

Reid

Barry

2009

IEEE Photon. Technol. Lett.

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Abstract-In this letter, we investigate the removal of multiple access interference and optical beat noise from a two-channel optical system that simulates the output from a time-spread optical code-division multiple access system operating at a data rate of 100 Mb/s. Both noise sources were removed using a saturable absorber semiconductor optical amplifier two-photon absorption receiver structure. Experimental results show error-free operation when all three devices are used together.Index Terms-Multiple access interference, optical beat noise, saturable absorber (SA), semiconductor optical amplifier (SOA), two-photon absorption (TPA).

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Section: Semiconductor Optical Amplifiermentioning

confidence: 99%

Reduction of MAI and Beat Noise in OCDMA Systems Using an SA-SOA-TPA-Based Receiver

Dexter

Reid

Barry

2009

IEEE Photon. Technol. Lett.

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“…The four-dimensional vector , which has real components in the time domain, is for later use defined in the Laplace domain . The differential of is seen to be (17) Next, the linearized field (9) is separated into real and imaginary parts and then Laplace transformed. Also, the linearized carrier (10) With unit vectors having components , , the boundary conditions for the small-signal fields in (12) and (13) may also be stated as…”

Section: Small-signal Analysismentioning

confidence: 99%

“…The method allows for theoretical studies of devices where reflective end facets are necessary, e.g., injectionlocked lasers and reflective SOAs [17], as well as devices where poorly AR-coated facets, may alter the performance of the device in an undesired way. A major part of the presented numerical examples concerning modulation responses address cases where the input field is optically modulated while holding the pump current constant.…”

mentioning

confidence: 99%

General Method for Calculating the Response and Noise Spectra of Active Fabry–Perot Semiconductor Waveguides With External Optical Injection

Blaaberg

Mørk

2009

IEEE J. Quantum Electron.

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Abstract-We present a theoretical method for calculating small-signal modulation responses and noise spectra of active Fabry-Perot semiconductor waveguides with external light injection. Small-signal responses due to either a modulation of the pump current or due to an optical amplitude or phase modulation of the input field can be calculated. Both responses and noise spectra are given through semianalytical expressions taking into account the longitudinal extent and finite end-facet reflectivities of the active device. Different examples of responses and spectra are presented for semiconductor optical amplifiers and an injection-locked laser. We also demonstrate the applicability of the method to analyze slow and fast light effects in semiconductor waveguides. Finite reflectivities of the facets are found to influence the phase changes of the injected microwave-modulated light.

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“…Unfortunately, it would make the burden too heavy for the network provider because the repair and maintenance costs of the network would increase due owl 2biji obpc pap.i to the inventory of different optical and electrical devices. Similarly, it is a well-known fact that the OBI noise has been preventing the development of a subcarrier multiplexed (SCM)-PON because a SCM-PON also uses several radio frequency (RF) subcarriers over a single light with the same wavelength in order to distinguish different users [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Optical beat interference noise reduction in OFDMA optical access link using self-homodyne balanced detection

Jung

Won

Han

2013

Optical Metro Networks and Short-Haul Systems VI

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A Novel technique for reducing the OBI noise in optical OFDMA-PON uplink is presented. OFDMA is a multipleaccess/multiplexing scheme that can provide multiplexing operation of user data streams onto the downlink sub-channels and uplink multiple access by means of dividing OFDM subcarriers as sub-channels. The main issue of high-speed, single-wavelength upstream OFDMA-PON arises from optical beating interference noise. Because the sub-channels are allocated dynamically to multiple access users over same nominal wavelength, it generates the optical beating interference among upstream signals.In this paper, we proposed a novel scheme using self-homodyne balanced detection in the optical line terminal (OLT) to reduce OBI noise which is generated in the uplink transmission of OFDMA-PON system. When multiple OFDMA sub-channels over the same nominal wavelength are received at the same time in the proposed architecture, OBI noises can be removed using balanced detection. Using discrete multitone modulation (DMT) to generate real valued OFDM signals, the proposed technique is verified through experimental demonstration.

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OBI noise reduction using gain saturated SOA in reflective SOA based WDM/SCM-PON optical links

Cited by 14 publications

References 5 publications

Reduction of MAI and Beat Noise in OCDMA Systems Using an SA-SOA-TPA-Based Receiver

Reduction of MAI and Beat Noise in OCDMA Systems Using an SA-SOA-TPA-Based Receiver

General Method for Calculating the Response and Noise Spectra of Active Fabry–Perot Semiconductor Waveguides With External Optical Injection

Optical beat interference noise reduction in OFDMA optical access link using self-homodyne balanced detection

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