BI-DIRECTIONAL OPTICAL COMMUNICATION MODULE

Japanese Patent JP3662162

B2

PROBLEM TO BE SOLVED: To provide a one-core full duplex optical communication module that is capable of transmission and reception with one optical fiber, that suppresses near-end reflection return light with a simple structure, that has little loss both in transmission and reception, and that is highly efficiently coupled with a large diameter optical fiber such as POF.
SOLUTION: A polarizing film 4 is arranged in the optical path for the reflection return light SR1 of transmission light S1 emitted from a light emitting element 6. The reflection return light SR1 is absorbed in the polarizing film 4 and is not made incident on a light receiving element 7. Signal light R1, which is light emitted from an optical fiber, passes through the polarizing film 4 and is coupled with the light receiving element 7.

Ishii
Toshiyuki Matsushima
Hideaki Fujita
Takafumi Iwai
Yukio Kurata
Toshihiro Tamura

JP2000058191A

June 22, 2005

March 03, 2000

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Sharp Corporation

G02B6/42; H01L31/0232; H01S5/022; H04B10/00; H04B10/07; H04B10/2507; H04B10/40; H04B10/50; H04B10/564; H04B10/60; H04B10/67; (IPC1-7): G02B6/42; H01L31/0232; H01S5/022; H04B10/24

JP8327858A
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JP9102650A
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JP6132600A

Hiroshi Yamazaki
Atsushi Maeda
Yukinori Nakakura

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