Coherent light generators – Particular active media – Semiconductor
Patent
1995-03-30
1996-07-16
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
372 20, 372 23, 372 46, 372 96, H01S 310
Patent
active
055360858
ABSTRACT:
A multi-wavelength laser array having a plurality of gain-coupled distributed feedback ridge waveguide lasers. The operational wavelength of each laser is established by selecting a width of the ridge waveguide in the range 1.6 .mu.m to 5.2 .mu.m. Fine tuning of each central wavelength is achieved by thermal power to selected waveguides via Titanium thin film resistors integrated into the laser array. A wavelength range of 9 nm is demonstrated utilizing a sixteen element array.
REFERENCES:
patent: 5173909 (1992-12-01), Sakano et al.
patent: 5311540 (1994-05-01), Pocholle et al.
patent: 5347526 (1994-09-01), Suzuki et al.
patent: 5384797 (1995-01-01), Welch et al.
"Tunable DFB Laser with a Striped Thin-Film Heater", Sakano et al, IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1992, pp. 321-323.
"Integrated Four-Wavelength DFB Laser Array with 10 Gb/s Speed and 5 nm Continuous Tuning Range", Wang et al, IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1992, pp. 318-320.
Huang Weiping
Li Guo P.
Makino Toshihiko
Sarangan Andrew M.
Davie James W.
MacGregor George
Northern Telecom Limited
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