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 68
... transmission format for long - haul and ultra - long- haul lightwave transmissions . DQPSK signal also improves the spectral efficiency of the lightwave systems . Because the usage of optical amplifiers to maintain a high optical power ...
... transmission , lightwave systems are currently in virtually all metro networks . The future deploy- ment of optical fiber is moving toward the home for broadband access . Fiber - to - the - premisc ( FTTP ) and fiber - to - the - home ...
... transmission systems , only the intensity of optical signal is used to carry information . Neither the phase nor frequency of an optical carrier is used . In order to transmit more information in a single optical carrier or a single WDM ...
... transmission . Subcarrier multiplexing ( Way , 1998 ) is also IMDD system to transmit either digital or analog modulated frequency - division multi- plexed ( FDM ) channels in the intensity of the optical carrier . Subcarrier ...
... 2003c , Rasmussen et al . , 2003 , Zhu et al . , 2003 ) for long - haul transmission systems , mostly DPSK sig- nal with RZ pulses . Differential quadrature phase - shift keying ( DQPSK ) N spans TX 1 RX 1 Fiber TX 2 RX. Introduction 9.
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 |