Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1994-04-14
1996-02-13
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359234, 359581, H01S 310, G02B 632
Patent
active
054915821
ABSTRACT:
A light-receiving module having the characteristics of a tunable bandpass filter and applicable for receiving light signal from an optic fiber in the field of optical communication or optical information processing. The light-receiving module is coupled to the optical fiber and has a photo-detecting device for converting a light signal into an electric signal, a lens optically coupling said optical fiber and said photo-detecting device, and a bandpass filter plate provided between the photo-detecting device and the lens. The bandpass filter plate is supported such that it may rotate around an axis which is parallel to the face of the plate.
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patent: 4813756 (1989-03-01), Frenkel et al.
IEEE Photonics Technology Letters, vol. 2, No. 10, Oct. 1990, New York, pp. 753-755, R. C. Steele & G. R. Walker, "High-Sensitivity FSK Signal Detection Wtih An Erbium-Doped Fiber Preamplifier and Fabry-Perot Etalon Demodulation".
IEEE Photonics Technology Letters, vol. 2, No. 9, Sep. 1990, New York, pp. 669-672, Willner et al., "Use Of LD-Pumped Erbium-Doped Fiber Preamplifiers With Optimal Noise Filtering In A FDMA-FSK 1 Gb/s Star Network".
Patent Abstracts of Japan, vol. 13, No. 276 (P-890) Mar. 13, 1989, JP-A-10 66 526 (A T R Koudenpa Tsushin Kenkyusho).
Patent Abstracts of Japan, vol. 6, No. 013 (P-099) Oct. 29, 1981, JP-A-56 138 707 (Fujitsu Ltd.).
Moskowitz Nelson
NEC Corporation
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