A miniature low cost and high reliability 1 × 2 mechanical optical switch
Resource
J. Micromech. Microeng. 15 (2005) 1565–1570
Journal
J. Micromech. Microeng
Journal Volume
15
Journal Issue
2005
Pages
-
Date Issued
2005-06-28
Date
2005-06-28
Author(s)
DOI
20060927121003523855
Abstract
This paper presents the design, fabrication and tests of a miniature
1 × 2 mechanical type optical switch, whose components are fabricated by
precision machining and MEMS technologies. The packaging and
alignment are integral processes utilizing the CCD image processing
technique and PZT-stages controlled technique in association with the
optimization software enabling the fiber-to-fiber alignment to low optical
loss requirement. Optical fibers in use have the following specifications:
single-mode fiber (SMF) outer diameter 125 μm, core diameter 9 μm, zero
degree of the fiber tip angle and non-anti-reflection coating. The initial gap
of the input and output fibers is 10 μm. First, we produced a fiber holder
and a V-groove by MEMS technology and used a relay as the input fiber
switching actuator. Through proper mechanism design, the fiber positioning
error can be reduced to below 0.1 μm. After the optimized alignment
process, the results presented that the insertion loss could be controlled to
ch1: 0.8 dB, ch2: 1.4 dB at a switching time of 5 ms. The reliability tests
demonstrated that the variation of the insertion losses are ch1: 0.04 dB, ch2:
0.02 dB after 10 000 cycle times, and ch1: 0.024 dB, ch2: 0.006 dB
throughout 100 switch times after 1 000 000 cycle times. The developed
1 × 2 optical switch largely reduces the physical size to 1/2–1/3 in
comparison with traditional mechanical optical switches, and the cost is
only about 1/10–1/20 of the MEMS type optical switches. The
advantages of this innovative optical switch are: small size (only about 20 × 16 × 7.5 mm3), low cost (only about US$10), high reliability, cross-talk
−80 dB and automatic alignment.
Publisher
臺北市:國立臺灣大學機械工程學系
Type
journal article
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