| 摘要 |
PROBLEM TO BE SOLVED: To obtain a product containing a dispersion compensating diffraction grating having low polarized light mode dispersion (an optical fiber communication system, for example). SOLUTION: The dispersion compensating chirp optical fiber Bragg diffraction grating is formed in a polarized light maintaining (PM) fiber having double difraction of at least 10-6, Preferably >=10-5. By using the PM fiber, the Polarized light mode dispersion, which typically cannot be avoided in the chirp Bragg diffraction grating 11 for dispersion compensation, can be essentially compensated. |
