Number | Name | Date | Kind |
---|---|---|---|
3760292 | Kogelnik et al. | Sep 1973 | |
4740987 | McCall et al. | Apr 1988 | |
4775980 | Chinone et al. | Oct 1988 | |
4796273 | Yamaguchi | Jan 1989 | |
4833687 | Hirata | May 1989 | |
4847857 | Ohkura | Jul 1989 |
Entry |
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IEEE Photonic Technology Letters, 1, "Corrugation-Pitch-Modulated Phase-Shifted DFB Laser,"]by M. Okai, et al., August 1989, pp. 200-201. |
Applied Physics Letters, 55, Jul. 31, 1989, "Novel Method to Fabricate Corrugation for a .lambda./4-Shifted Distributed Feedback Laser Using A Grating Photomask", by M. Okai et al., pp. 414-417. |