Number | Date | Country | Kind |
---|---|---|---|
10-020010 | Jan 1998 | JP |
Number | Name | Date | Kind |
---|---|---|---|
5608825 | Ip | Mar 1997 |
Number | Date | Country |
---|---|---|
3-149504 | Jun 1991 | JP |
4-251202 | Sep 1992 | JP |
9-326759 | Dec 1997 | JP |
Entry |
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Electronics Letters, vol. 33, No. 21 (Oct. 9th, 1997), pp. 1812-1813, F.S. Yang et al. |
Optics Letters, vol. 21, No. 8 (Apr. 15, 1996), pp. 573-575, M.E. Marhic et al. |