Optical waveguides – With optical coupler – Particular coupling function
Patent
1994-10-18
1996-02-06
Lee, John D.
Optical waveguides
With optical coupler
Particular coupling function
385 28, 385 43, 385 88, G02B 626
Patent
active
054902274
ABSTRACT:
A light-receiving module includes: a pigtail optical fiber including a core portion for transmitting an optical signal and a cladding portion covering a side face of the core portion; an optical connector provided at a first end of the pigtail optical fiber for optically connecting a transmitting optical fiber with the end of the pigtail optical fiber; a light-receiving device having a light-receiving face for receiving the optical signal propagating through the core portion and for converting the optical signal into an electric signal; an optical coupling system for converging the optical signal emitted from a second end of the pigtail optical fiber onto the light-receiving face of the light-receiving device; and means for preventing light propagating through the cladding portion from reaching the light-receiving face of the light-receiving device so that the optical signal propagating through the core portion does not interfere with the light propagating through the cladding portion on the light-receiving face of the light-receiving device.
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Lidgard et al; IEEE Photonics Technology Letters, vol. 2, No. 1, pp. 519-521, 1990, "Generation and Cancellation of Second-Order Harmonic Distortion in Analog Optical Systems by Interferometric FM-AM Conversion." no month.
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Matsui Yasushi
Sasai Hiroyuki
Takechi Hideaki
Tanabe Manabu
Utsumi Kuniaki
Lee John D.
Matsushita Electric Industrial Co., Inc.
Palmer Phan T. H.
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