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 63
... Direct - Detection Systems Phase - Modulated Optical Communications 2 2.1 PSK Systems 2.2 DPSK Systems 3 7 ∞ 8 3 WDM Systems 10 4 Comparison of Phase- and Intensity - Modulated Signals 12 5 6 Recent Advances in Direct - Detection DPSK ...
... Direct Frequency Modulation of a Semiconductor Laser 50 5 Summary 52 3 ... DPSK Signal 79 3.4 Heterodyne Receiver ... Differential Detection with Polarization Diversity 105 7 Polarization viii PHASE - MODULATED OPTICAL COMMUNICATION SYSTEMS.
... DPSK Signals 252 Four - Wave - Mixing 5 Summary 257 266 8. WAVELENGTH - DIVISION - MULTIPLEXED DPSK SIGNALS 1 WDM ... Detection of Multilevel Signals 316 3.1 M - ary PSK Signal 316 3.2 Quadrature Amplitude Modulation 318 4 Direct - Detection ...
... DPSK Signals 343 4 Further Remarks and Summary 348 Appendix 10.A Some Deviations 351 11. CAPACITY OF OPTICAL CHANNELS 353 1 Optical Channel with Coherent Detection ... Direct - Detection Channel 359 2.1 Some Approximated Results 360 2.2 Exact ...
... direct - detection of return - to- zero differential phase - shift keying ( RZ - DPSK ) and differential quadra- ture phase - shift keying ( DQPSK ) signal . With 3 dB better receiver sen- sitivity and improved tolerance to fiber ...
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 |