Number | Date | Country | Kind |
---|---|---|---|
4-27777 | Feb 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4879462 | Stephens | Nov 1989 | |
5062705 | Sato et al. | Nov 1991 |
Number | Date | Country |
---|---|---|
0421926 | Apr 1991 | EPX |
60-222815 | Nov 1985 | JPX |
4-147114 | May 1992 | JPX |
2240190 | Jul 1991 | GBX |
9118434 | Nov 1991 | WOX |
Entry |
---|
M. Tachibana et al., "Erbium-Doped Fiber Amplifier with Flattened Gain Spectrum", IEEE Photonics Technology Letters, vol. 3, No. 2, Feb. 1991 pp. 118-119. |
Kazuo Hagimoto, "Long-Span Gigabit/s Optical Transmission Systems Using Er-doped Fiber Amplifiers", NTT Transmission Systems Laboratories, pp. 23-28, (no date). |