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 27
... IMDD Channel 370 3 Quantum - Limited Capacity 4 Channel Capacity in Nonlinear Regime 5 Summary Bibliography 372 376 382 385 Index 423 Currently , virtually all commercially available optical communication systems use xii PHASE ...
... ( IMDD ) systems . Most textbooks of optical communications focus mainly on IMDD systems ( Agrawal , 2002 , Einarsson , 1996 , Iannone et al . , 1998 , Kazovsky et al . , 1996 , Keiser , 1999 , Kolimbiris , 2004 , Mynbaev and Scheiner ...
... IMDD system illustrated schematically in Fig . 1.1 is very simple . The receiver decides whether the transmitted bits are either “ 0 ” or “ 1 ” based on the presence or absence of light . This class of system can use either non - return ...
... IMDD system , when the phase or frequency of an optical carrier is used to transmit information , the phase or frequency noise of the transmitter laser adds directly to the phase and frequency of the optical carrier . Both phase or ...
... IMDD system of Fig . 1.1 with the PSK system of Fig . 1.2 , the optical signal in the optical fiber for an IMDD system looks the same as that of the transmitted or received signal but that of a PSK system looks significantly different ...
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 |