Tolerance Analyses of Planar Pickups with FiberLens and SIL
Chi Chin Lee
Dr. Han-Ping D. Shieh
The fiber-based optical pickup has two advantages. The large reduction in weight of the moving part allows higher speed operation. Another advantage is that an optical isolator can be easily inserted between the LD and the fiber to stabilize the lasing. The limitation of fiber-base pickup head is that NA is too small, thus, large spot size. The solid immersion lens (SIL) is added into the planar fiber-base pickup head for increasing NA. The objective of thesis is to design the system, analyze the tolerance in fabrication and assembly process, and demonstrate the feasibility of integrating fiber-base pick-up head. The first part of thesis is to design the system, analyze the tolerance in fabrication and assembly process. The second part is to describe the fabrication process and set up the measurement system. According to the measurement system, the performances of fiberlens and fiberlens plus SIL were measured. From these results, the differents between measurement and simulation were analyzed.
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