Common methods of determining the spatial resolution of fiber-optic image guides are by measuring the diameter of individual microfibers or by the use of a resolution test target. However these methods cannot provide enough information of spatial resolution in ultrathin fiber-optic image guides. In this study, a simple method to measure the modulation transfer function (MTF) of an mage guide was developed. The MTFs of ultrathin image guides with 3 and 4<TEX>${\mu}{\textrm}{m}$</TEX> Um diameter were measured by examining transmitted sharp edge image. This method should be especially useful for measuring spatial resolution of ultrahigh resolution image guides with less than 5 <TEX>${\mu}{\textrm}{m}$</TEX> diameter microfibers because their spatial resolution cannot be determined by individual microfiber diameter due to crosstalk and leaky ray phenomena.

© 2001 Optical Society of Korea

1. B. Lee, Ph.D. dissertation, University of Florida, 95 (1999)
2. N. S. Kapany, Fiber optics: Principles and applications, (Academic Press, New York, 1967)
3. F. Suzuki, Proc. SPIE 1592, 150 (1991) [CrossRef]
4. L. Huang and U. Osterberg, Proc. SPIE 2536, 480 (1995) [CrossRef]
5. A. Komiyama and M. Hashimoto, Electron. Lett. 25, 1105 (1989) [CrossRef]
6. S. Yamaguchi, A. Shimogima, and T. Hosono, Electro. Comm. Japan, Part 2, 72, 51 (1989)
7. R. Conde, C. Depeursinge, O. Coquoz, and F. Taleblou, Proc. SPIE 2084, 87 (1994) [CrossRef]
8. T. Tsumanuma, K. Tanaka, S. Chigira, K. Sanada, and K. Inada Opt. Fib. Medicine 3, Proc. SPIE 906, 92 (1988)

Electro. Comm. Japan

• S. Yamaguchi, A. Shimogima, and T. Hosono, Electro. Comm. Japan, Part 2, 72, 51 (1989)

Electron. Lett.

• A. Komiyama and M. Hashimoto, Electron. Lett. 25, 1105 (1989) [CrossRef]

Proc. SPIE

• R. Conde, C. Depeursinge, O. Coquoz, and F. Taleblou, Proc. SPIE 2084, 87 (1994) [CrossRef]
• T. Tsumanuma, K. Tanaka, S. Chigira, K. Sanada, and K. Inada Opt. Fib. Medicine 3, Proc. SPIE 906, 92 (1988)
• F. Suzuki, Proc. SPIE 1592, 150 (1991) [CrossRef]
• L. Huang and U. Osterberg, Proc. SPIE 2536, 480 (1995) [CrossRef]

Other

• B. Lee, Ph.D. dissertation, University of Florida, 95 (1999)
• N. S. Kapany, Fiber optics: Principles and applications, (Academic Press, New York, 1967)

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