Patent ID: 6636667
Filing Date: 2003-10-21
Classification: G02B

Abstract:
An optical fiber grating package comprising:an optical fiber portion having at least one grating between a first end and a second end of said fiber portion, said first end and said second end defining a longitudinal direction, said grating having an optical characteristic which varies with strain of said fiber portion; and a supporting assembly comprising: a first supporting member being formed of a material having ultra low CTE; a second supporting member being formed of a material having a negative CTE; and a first tuning means for changing the dimension of said first supporting member substantially along said longitudinal direction; wherein said first supporting member and said second supporting member are bonded together, said first end and said second end of said fiber portion are fixed on said supporting assembly such that said optical characteristic of said grating is tunable by said first tuning means and effect of temperature fluctuations on said strain is substantially compensated by said second supporting member.