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 70
... Density 2 5. NONLINEAR PHASE NOISE Nonlinear Phase Noise for Finite Number of Fiber Spans 1.1 Self - Phase Modulation Induced Nonlinear Phase Noise Asymptotic Nonlinear Phase Noise 143 144 144 148 153 2.1 Statistics of Nonlinear Phase ...
... Density of Residual Nonlinear Phase Noise 194 199 3 3.1 Linear Compensator for Infinite Number of Fiber Spans Minimum Mean - Square Error Compensation 202 202 3.2 Distribution of the Linearly Compensated Received Phase 205 3.3 PSK ...
... . In its simplest way , a semi- conductor laser converts electrons to photons . The laser electric field EL and the carrier density ne as a function of 26 PHASE - MODULATED OPTICAL COMMUNICATION SYSTEMS Rate Equations and Laser Dynamic 3.
... density of nc , G ( nc ) is the power gain as a function of carrier density ne , Tp is the lifetime of the photon particle , Fn ( t ) is the Langevin random force caused by spontaneous emission , and Ic is the rate of carrier injection ...
... density have stationary values of Eo Poejo and No. The rate equations of Eqs . ( 2.9 ) and ( 2.10 ) can be linearized around Eo and No for EL ( t ) = √ √Pco + Ap ( t ) ejo + j ¢ n ( t ) and n 。( t ) : = No An ( t ) . First of all ...
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 |