## Coherent and Nonlinear Lightwave CommunicationsThis is a practical source on recent developments in coherent and nonlinear lightwave communications. The book systematically presents up-to-date explanations of all the relevant physical principles and recent research in this emerging area. Providing an unparallelled engineering-level treatment (with 700 equations), this reference also describes the progression of coherent and nonlinear technology from yesterday's experimental field to today's practical applications tool. This work is intended as a tool for research telecommunication engineers, applications engineers working with broadband telecom systems and networks, and postgraduate students. |

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Page 56

56 ) , and the general scheme of a DCPSK optical receiver , we can express the

phase error that appears in the receiver as the

shifts in the considered digit interval and the preceding one , or 40 , ( t ) = 0 , ( t ) –

Or ...

56 ) , and the general scheme of a DCPSK optical receiver , we can express the

phase error that appears in the receiver as the

**difference**between the phaseshifts in the considered digit interval and the preceding one , or 40 , ( t ) = 0 , ( t ) –

Or ...

Page 116

Thus , the PLL of first order , which does not contain the filter , cannot reach the

absolute synphase state characterized by zero phase

phase

...

Thus , the PLL of first order , which does not contain the filter , cannot reach the

absolute synphase state characterized by zero phase

**difference**. The stationaryphase

**difference**in the first - order PLL has the finite value , which is reciprocally...

Page 121

3 , can be applied if the phase

] mod ( 27 ) ( 4 . 77 ) Equation ( 4 . 77 ) means that the random variable olt )

remains in the range [ - u to 7 ] for any shift between the input - signal phase and

the ...

3 , can be applied if the phase

**difference**is expressed as $ ( t ) = [ 91 ( t ) – 42 ( t )] mod ( 27 ) ( 4 . 77 ) Equation ( 4 . 77 ) means that the random variable olt )

remains in the range [ - u to 7 ] for any shift between the input - signal phase and

the ...

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### Contents

Preface | 5 |

Coherent Optical Receiver Sensitivity | 15 |

Optical Transmitters for Coherent Lightwave Systems | 61 |

Copyright | |

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### Common terms and phrases

according amplifier amplitude applied assumed bandwidth becomes carrier caused channels Chapter characteristics coefficient coherent optical receiver Communications components condition considered constant continuous wave corresponding defined density depends described detection scheme determined difference direct dispersion distance distribution effect Electron emission energy equal equation Erbium error probability evaluated expressed factor Figure filter frequency function gain given Hence heterodyne homodyne IEEE/OSA incoming increase influence input integral laser length light lightwave systems Lightwave Techn limit loss means methods mode modulation noise nonlinear obtained operation optical amplifiers optical fiber optical oscillator optical power optical receiver optical signal output parameters phase photodiode photons polarization possible practical presents propagation pulse pump Quantum Raman ratio realization referent region resonator respectively scattering semiconductor laser shift soliton spectral spectral linewidth spontaneous stimulated takes term transmission variance wave wavelength