Title :
A Wavelength Selective Bidirectional Isolator
Author :
Hu, Xi-Kui ; Huang, Zhang-Di ; Li, Su-Shan ; Xu, Fei ; Lu, Yan-qing
Author_Institution :
Dept. of Mater. Sci. & Eng., Nanjing Univ., Nanjing, China
Abstract :
A wavelength selective optical isolator is proposed. Being different from conventional isolators, a well-designed wave plate is employed and works together with the Faraday rotator. Different wavelengths thus experiences different phase retardation so that wavelength-dependant polarization states are obtained for bidirectional beams. A (1.49 μm, 1.31 μm) wavelength selective isolator is demonstrated, which means 1.49 μm light only may propagate along one-direction why the opposite wave is only for 1.31 μm light. Over 60 dB optical isolation is obtained, which has promising applications in access optical networks.
Keywords :
Faraday effect; optical communication equipment; optical fibre networks; optical isolators; optical retarders; subscriber loops; Faraday rotator; access optical network; bidirectional beams; phase retardation; wave plate; wavelength 1.31 mum; wavelength 1.49 mum; wavelength dependant polarization state; wavelength selective bidirectional isolator; wavelength selective isolator; wavelength selective optical isolator; Birefringence; Isolators; Magnetic analysis; Optical fiber communication; Optical fiber networks; Optical fiber polarization; Optical polarization; Optical propagation; Optical retarders; Passive optical networks;
Conference_Titel :
Photonics and Optoelectronic (SOPO), 2010 Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4963-7
Electronic_ISBN :
978-1-4244-4964-4
DOI :
10.1109/SOPO.2010.5504124
