Wavelength controlling method enabling use of wider wavelength r

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

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H04B 1000

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active

061010146

ABSTRACT:
A method of controlling a wavelength of emitted light in a network system having a light transmission line for transmitting light, light-emitting means having a plurality of discrete continuous-wavelength-tunable ranges and emitting the light to the light transmission line, and detecting means for detecting light on the light transmission line, includes detecting, by the detecting means, a wavelength falling within one of the plurality of continuous-wavelength-tunable ranges of the light-emitting means which does not interfere with any wavelengths of light being transmitted on the light transmission line, and emitting, to the light transmission line, light from the light-emitting means at the wavelength detected in said detecting step.

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Oberg, M., et al., "A Three-Electrode Distributed Bragg Reflector Laser with 22 nm Wavelength Tuning Range", IEEE Photonics Technology Letters, vol. 3, No. 4, pp. 299-301 (Apr. 1991).
Ouchi, T., et al., "Polarization Switching in AlGaAs/GaAs Distributed Feedback Lasers Between the Stable Single Longitudinal Modes", Applied Physics Letters, vol. 67, No. 23, pp. 3405-3407 (Dec. 1995).
Kotaki, Y., et al., "Long Cavity .lambda./4-Shifted MQW-DFB Laser With Three Electrodes", Technical Report of the Institute of Electronics, Information and Communication Engineers (OQE 89-116), vol. 89, No. 329, pp. 61-66 (Dec. 1989). In Japanese.
Miller, C., "A Field-Worthy, High-Performance, Tunable Fiber Fabry-Perot Filter", European Conference on Optical Communication (ECOC '90-605), pp. 605-608. 1990 (No Month).

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