Phase-Modulated Optical Communication SystemsFiber-optic communication systems have revolutionized our telecommunication infrastructures – currently, almost all telephone land-line, cellular, and internet communications must travel via some form of optical fibers. In these transmission systems, neither the phase nor frequency of the optical signal carries information – only the intensity of the signal is used. To transmit more information in a single optical carrier, the phase of the optical carrier must be explored. As a result, there is renewed interest in phase-modulated optical communications, mainly in direct-detection DPSK signals for long-haul optical communication systems. When optical amplifiers are used to maintain certain signal level among the fiber link, the system is limited by amplifier noises and fiber nonlinearities. Phase-Modulated Optical Communication Systems surveys this newly popular area, covering the following topics: - The transmitter and receiver for phase-modulated coherent lightwave systems - Method for performance analysis of phase-modulated optical signals - Direct-detection DPSK signal with fiber nonlinearities, degraded by nonlinear phase noise and intrachannel effects - Wavelength-division-multiplexed direct-detection DPSK signals - Multi-level phase-modulated optical signals, such as the four-phase DQPSK signal. Graduate students, professional engineers, and researchers will all benefit from this updated treatment of an important topic in the optical communications field. |
From inside the book
Results 1-5 of 71
... SIGNAL 111 1 Relative Intensity Noise 112 2 2.1 Phase Error for Differentially Detected Signals Delay Phase Error ... Received Electric Field 162 3 Exact Error Probability for Distributed Systems 163 3.1 Distribution of Received Phase ...
... received intensity , most people believed that nonlinear phase noise was the ... signal for lightwave communications . This book is originated from the notes ... signal is mainly studied for system dominated by amplifier noises ...
... signal Received signal usually a trans - impedance amplifier ( TIA ) to convert photocurrent to voltage . The received signal after the TIA is the same as the transmitted signal but with noise mostly from optical amplification and the ...
... signal Demodulated signal the phase of the carrier is generally used in most wireline or wireless communication ... received signal is mixed with LO laser , an optical beating signal is generated at the photodiode , giving a beating ...
... received signal but that of a PSK system looks significantly different with the transmitted signal . In PSK systems , after the mixing of received signal with LO laser at the photodiode , the transmitted data are recovered using a ...
Contents
7 | |
20 | |
22 | |
COHERENT OPTICAL RECEIVERS | 53 |
Performance of Synchronous Receivers | 72 |
4 | 84 |
5 | 97 |
IMPAIRMENT TO OPTICAL SIGNAL | 111 |
B Joint Characteristic Function | 237 |
INTRACHANNEL PULSETOPULSE INTERACTION | 245 |
Nonlinear Phase Noise Versus Intrachannel | 249 |
FourWaveMixing | 257 |
WAVELENGTHDIVISIONMULTIPLEXED | 267 |
Summary | 300 |
3 | 308 |
PHASEMODULATED SOLITON SIGNALS 335 | 334 |
NONLINEAR PHASE NOISE | 143 |
Exact Error Probability for Distributed Systems | 163 |
COMPENSATION OF NONLINEAR PHASE NOISE | 189 |
3 | 200 |
6 | 230 |
CAPACITY OF OPTICAL CHANNELS | 353 |
Bibliography | 385 |
Index | 423 |