Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1997-02-20
1998-06-09
Hellner, Mark
Optical: systems and elements
Optical modulator
Light wave temporal modulation
385 2, 385 3, H01S 300, G02F 10135
Patent
active
057644004
ABSTRACT:
Disclosed herein is an optical modulator module including an optical waveguide structure of a Mach-Zehnder type, for example, an electrode for switching a coupling mode where an output beam is obtained from the optical waveguide structure and a leakage mode where a leakage beam deflects from the optical waveguide structure, a photodetector having a photodetecting surface for receiving the leakage beam, and a mechanism for converting a beam parameter of the leakage beam so as to prevent close contact of the photodetecting surface with the optical waveguide structure. The optical modulator module allows monitoring of optical power by the use of the leakage beam and is improved in manufacturability.
REFERENCES:
patent: 4983009 (1991-01-01), Musk
patent: 5259044 (1993-11-01), Isono et al.
patent: 5357590 (1994-10-01), Aucacher
patent: 5394493 (1995-02-01), Ames
Itou Tomoyuki
Kubota Yoshinobu
Omori Yasuhiro
Otani Toshihiro
Takamatsu Hisashi
Fujitsu Ltd.
Hellner Mark
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