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Increased delivery of more premium access services over passive optical networks (PONs) has made in-operation optical distribution network monitoring and fault detection a new
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In Section II, we provide the theoretical basis for performance monitoring from digital coherent receivers. At first, the linear optical channel model is explained, followed by the...
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Optical performance monitoring (OPM) is an important issue for proper operation of nextgeneration optical networks. Among various monitored parameters, the
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Abstract: We present a robust and precise optical performance monitoring technique from FIR filter coefficients in coherent receivers with digital equalization.
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40 Gbit QSFP+ transceiver showing the optical fibre connection Quad Small Form-factor Pluggable (QSFP) transceivers are available with a variety of transmitter
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Index Terms—Channel reconstruction, digital longitudinal monitoring, split-step Fourier method, optical fiber loss, chromatic dispersion, gain spectrum, passband narrowing
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In this section, we discuss techniques to characterize optical receivers, with a focus on the wideband characterization of their frequency response.
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In this paper, we present a method for combined fiber parameter estimation from digital filter coefficients of a polarization diverse coherent receiver. All deterministic linear optical channel
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Digital Optical Monitoring This feature module provides information on the digital optical monitoring (DOM) feature for the Cisco ASR 901 Series Aggregation Services Router.
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The optical components in long-haul systems that require monitoring are the transmitter, receiver, optical amplifier, and active WDM components. The major monitoring parameters are power and wavelength.
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Digital-coherent-receiver-based fiber-longitudinal power profile estimation (PPE) over multiple spans is presented. We then review three specific examples of applications of photonics tomography based
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We review recent advancements in the digital longitudinal monitoring (DLM) of fiber-optic links. DLM visualizes physical link parameters distributed along the entire length of the link at a coherent
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Digital Diagnostic Monitoring (DDM), also known as Digital Optical Monitoring (DOM), is a key feature in modern optical transceivers. It allows real
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Filterless optical networks (FONs) have been proposed as a feasible solution for optical metro networks. In addition, as a result of the shorter distance compared to core optical networks,
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Several methods have been proposed for monitoring tasks, which are based on pilot tones, RF tones, asynchronous histogram, and fiber nonlinear effects. Most of
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Modern spectrally efficient optical communication systems utilize polarization-multiplexed coherent transmission in complex modulation format. Coherent receivers used in these systems
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Coherent optical detection has gained enormous interest in the past decade with many applications spanning through Optical Communication, Data Center, and LiDAR. The enabling
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Monitoring receivers must be able to process antenna signals with high cumulative loads and wide dynamic range. In particular, gapless real-time processing is a
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Having discussed the characteristics and operation of photodetectors in the previous chapter, the next step is to consider features of the optical receiver. An optical receiver consists of a
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In this paper, we review optical performance monitoring techniques where machine learning algorithms have been applied. Moreover, since many
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4.1 Receiver DSP configuration for the DP-QAM transmission system and demodulation scheme showing two distinct stages where waveforms are captured to estimate OSNR and BER,
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The optical receiver is a critical element of an optical communication system since it often determines the overall system performance. The function of the optical receiver is to detect the incoming optical
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In this chapter we consider issues related to the design of optical receivers. As signals travel in a fiber, they are attenuated and distorted, and it is the function of the receiver circuit at the
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An ''Optical Receiver'' is a device that detects and converts the light received from a transmitter into an electrical signal. It consists of a photodetector and an amplifier, which work together to minimize
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