Spectrum-sliced fiber amplifier light source for multichannel WDM applications

Lee, J.S.; Chung, Yun Chur; DiGiovanni, D. J.

doi:10.1109/68.262573

Cited by 244 publications

(73 citation statements)

References 11 publications

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“…Spectrum slicing is an attractive and viable technology for such PON architectures [2] as it capitalizes on the economical advantages of incoherent sources such as light-emitting diodes, superluminescent diodes, and fiber-based amplified spontaneous emission (ASE) sources. Spectrum slicing is a method of sharing a single broadband optical source among many user channels by allocating a unique spectral slice to each channel [3]. However, the excess intensity noise present in these "thermal-like" incoherent sources imposes an upper limit on the achievable signal-to-noise ratio (SNR).…”

Section: Introductionmentioning

confidence: 99%

Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems

McCoy

Horák

Thomsen

et al. 2005

J. Lightwave Technol.

116

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Abstract-In this paper, we present an experimental and numerical study of semiconductor optical amplifier (SOA)-based noise suppression and its relevance to high-channel-density spectrumsliced wavelength-division-multiplexed systems. We show that the improvement in signal quality is accompanied by spectral distortion, which renders it susceptible to deterioration in the presence of subsequent optical filtering. This phenomenon originates from the loss of intensity correlation between spectral components of the SOA output when the signal spectrum is altered. As a consequence, a design tradeoff is introduced between intensity noise and crosstalk in high-channel-density systems. These adverse effects can be overcome by optimized SOA design, resulting in a significant improvement in signal quality.Index Terms-Optical noise, semiconductor optical amplifier (SOA), spectrum slicing, wavelength-division multiplexing(WDM).

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Section: Introductionmentioning

confidence: 99%

Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems

McCoy

Horák

Thomsen

et al. 2005

J. Lightwave Technol.

116

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show abstract

“…Specifically, the CW SC RIN level at an amplified 3-nm-bandwidth ASE beam power of 32 dBm was found to be ~20 dB larger than that of the full C-band ASE. Furthermore, contrary to the well-known fact that the RIN of an incoherent broadbandwidth light source is inversely proportional to its spectral bandwidth [30], the RIN of the CW SC was found to increase with the spectral bandwidth, as shown in Fig. 4.…”

Section: Cw Supercontinuum Seeded By Erbium-dopedmentioning

confidence: 42%

“…This fact needs to be confirmed by a further investigation. Note that in fiber optic communication systems a transmitted, incoherent signal with a SNR more than 18 dB can be detected at the receiver end without bit errors (Bit Error Rate < 10 -14 ) [30].…”

Section: Cw Supercontinuum Seeded By Erbium-dopedmentioning

confidence: 99%

Optical Coherence Tomography Based on a Continuous-wave Supercontinuum Seeded by Erbium-doped Fiber's Amplified Spontaneous Emission

Lee¹,

Jung²,

Kim³

2010

Journal of the Optical Society of Korea

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In this study, the use of a continuous-wave (CW) supercontinuum (SC) seeded by an erbium-doped fiber's amplified spontaneous emission (ASE) for optical-coherence tomography imaging is experimentally demonstrated. It was shown, by taking an in-depth image of a human tooth sample, that due to the smooth, flat spectrum and long-term stability of the proposed CW SC, it can be readily applied to the spectral-domain optical-coherence tomography system. The relative-intensity noise level and spectral bandwidth of the CW SC are also experimentally analyzed as a function of the ASE beam power.

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“…Previous research has proved that SS-WDMcan provide access applications with sustained bit rates of up to 10Gbps by employing semiconductor optical amplifier (SOA) based noise reduction [4] [5], forward error correction (FEC) [6] and supercontinuum sources [7]. However, as the slice width obtained from the broadband source via filtering cannot be as narrow as laser linewidths, this method includes the inherent limitation from beat noise via square-law photo-detection [8]. The beat noise remains at the decision with a level that depends on the ratio of the optical bandwidth to the bit rate, which is usually denoted by m. Beat noise increases with decreasing m, producing a power penalty to maintain the signal to noise ratio (SNR) that favors large values of m.…”

Section: Introductionmentioning

confidence: 99%

Spectrum-Sliced Wavelength Division Multiplexed Systems with Optical Preamplifiers

Sun

Leeson

2009

Fiber and Integrated Optics

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-The effect of dispersion on a spectrum-sliced WDM (SS-WDM) system with an optical preamplifier receiver is investigated for the first time. A theoretical model based on the statistics of both the incoherent source emission and the fiber dispersion is developed and used to obtain the bit error rate (BER). This model improves understanding of the spectral slicing method in a realistic situation where dispersion significantly impacts the transmission prior to arrival at the optical preamplifier. The optically preamplified receiver delivers a system of 2.5Gbps with at least twice the transmission capacity of a one with a pin diode receiver. This arises because the optimum slice width is decreased to ~0.3 nm allowing over 110 WDM channels. As a further benefit, a sensitivity improvement of 8.75 dB offers a superior power budget in comparison with the pin diode receiver, and the power efficiency can be improved by over 8dB. The results are obtained using the saddlepoint approximation and compared to the customary Gaussian approximation. The latter is found to be reasonably accurate in predicting the optimum bandwidth but conservative in sensitivity predictions.

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Spectrum-sliced fiber amplifier light source for multichannel WDM applications

Cited by 244 publications

References 11 publications

Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems

Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems

Optical Coherence Tomography Based on a Continuous-wave Supercontinuum Seeded by Erbium-doped Fiber's Amplified Spontaneous Emission

Spectrum-Sliced Wavelength Division Multiplexed Systems with Optical Preamplifiers

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