Highly practical fiber squeezer polarization controller

The authors developed a fiber squeezer polarization controller satisfying these requirements: (1) stable endless operation, (2) high response speed in the endless operation, and (3) protection from fiber break, a particular problem in a fiber squeezer polarization controller. The developed controller realized a stable endless operation with less than 0.1-dB power penalty under 40 degrees C fiber squeezer temperature change. In addition, a practically sufficient response speed of 15 pi rad/s was obtained in an endless operation. A metal-coated fiber used in the fiber squeezers was confirmed to be effective in preventing fiber break by a repetitive load application test (5-10 kg, one million times) to the metal-coated fiber. These techniques could realize a practical and high performance polarization controller for a coherent transmission system. >

[1]  P. T. Frederiksen,,et al.  A Fast Polarization Controller for Coherent Phase Diversity Receivers , 1989 .

[2]  Katsumi Emura,et al.  Stabilisation of heterodyne receiver sensitivity with automatic polarisation control system , 1986 .

[3]  K. Furuya,et al.  Polarization control on output of single-mode optical fibers , 1981 .

[4]  Leonard J. Cimini,et al.  Polarisation-insensitive coherent lightwave system using wide-deviation FSK and data-induced polarisation switching , 1988 .

[5]  T. Okoshi,et al.  New polarisation-state control device: rotatable fibre cranks , 1985 .

[6]  K. Nosu,et al.  Optical polarisation control utilising an optical heterodyne detection scheme , 1985 .

[7]  Y. Namihira,et al.  Polarisation fluctuations of optical fibre submarine cable in 6000 m deep sea trial , 1988 .

[8]  T. Matsumoto,et al.  Endlessly rotatable fractional-wave devices for single-mode-fibre optics , 1986 .

[9]  R. Noé.  Endless polarisation control in coherent optical communications , 1986 .

[10]  G. R. Walker,et al.  Endless polarisation control using four fibre squeezers , 1987 .

[11]  R. Ulrich,et al.  Polarization stabilization on single‐mode fiber , 1979 .

[12]  A. Ebberg,et al.  Optical FSK transmission with pattern-independent 119 photoelectrons/bit receiver sensitivity and endless polarisation control , 1989 .

[13]  D. W. Smith,et al.  POLARISATION INSENSITIVE HETERODYNE DETECTION USING POLARISATION SCRAMBLING , 1987 .

[14]  L. J. Rysdale.  Method of overcoming finite-range limitation of certain state of polarisation control devices in automatic polarisation control schemes , 1986 .

[15]  Reinhold Noe,et al.  Endless polarization control systems for coherent optics , 1988 .