Jun 1, 1998 - converting the LD electric signal to an LD optical signal, a. PD module for converting a photodiode optica
USO0RE36886E
Ulllted States Patent [19]
[11] E
Ishibashi et al.
[45] Reissued Date of Patent:
[54]
FIBER OPTIC MODULE
[75]
Inventors: Shin Ishibashi; Hideyuki Nagao;
[73]
5,416,871
7/1991
Japan
624962
11/1994
3218134 2087681
9/1991 7/1991
Jun. 1, 1998
[57]
Related US. Patent Documents
[51] [52] [58]
5,596,663 Jan. 21, 1997
for converting serial data received from the mother board to
08/372,078
converting the LD electric signal to an LD optical signal, a PD module for converting a photodiode optical signal to a PD electric signal, a PD semiconductor IC for converting the PD electric signal to PD serial data, a circuit board having the connector and carrying LD semiconductor IC and PD semiconductor IC, and LD shielding plate and a PD shield
an LD electric signal for a laser diode, an LD module for
Jan. 12, 1995
[JP]
ABSTRACT
A ?ber optic module includes a connector connected to a mother board of a host computer, an LD semiconductor IC
Foreign Application Priority Data
Apr. 25, 1994
European Pat. Off. .
Japan. United Kingdom .
Wood
Reissue of:
[30]
European Pat. Off. .
Primary Examiner—Akm E. Ullah Attorney, Agent, or Firm—Venable; Robert J. Frank; Allen
[21] Appl. N0.: 09/087,857
Patent N0.: Issued: Appl. N0.: Filed:
Oct. 3, 2000
FOREIGN PATENT DOCUMENTS 437161
Ltd., Kadoma, Japan
[64]
Re. 36,886
5/1995 Takahashi 61 al. ...................... .. 385/92
Tomiya Miyazaki, all of Fukuoka,
Assignee: Matsushita Electric Industrial Co.,
[22] Filed:
Patent Number:
Japan .................................. .. 6-086691
Int. Cl.7 ........................... .. G02B 6/255; G02B 6/00;
G02B 6/36
ing plate for electrically shielding the LD module and the PD module, respectively, a [?rst frame and a second] frame for
US. Cl. ............................................. .. 385/92; 361/785 Field of Search ...................... .. 385/88—94; 361/761,
holding the circuit board, LD module and PD module. In the ?ber optic module, the connector is of a surface mounting
361/783, 785, 760 [56]
References Cited U.S. PATENT DOCUMENTS 4,129,349
12/1978 Von Roesgen ........................ .. 361/785
4,149,072
4/1979 Smith et al.
4,291,943
9/1981 Binek 61 al. ..
4,595,839
6/1986
Braun et al. ..
250/199 385/88 .. 250/551
5,111,363
5/1992 Yagi 61 al.
5,202,943
4/1993 Carden et al.
361/398
5,295,214
3/1994 Card 61 al. .............................. .. 395/92
type, leads of the LD and PD modules are connected to a
side of the circuit board mounted With the connector, the circuit board has an LD variable resistor for adjusting a drive current of the LD module, the LD variable resistor is provided to a side of the circuit board opposite to the connector, the circuit board has a PD variable resistor provided to the side of the circuit board opposite to the connector for detecting a signal of the PD module, 3 signal processing semiconductor ICs or less are provided.
.. 395/92
58 Claims, 18 Drawing Sheets
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FIG.2
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F l G. 3
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FIG.4
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FIG.T
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FIG.8
Sheet 7 of 18
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FIG.I6
FIG . I7
PRIOR ART
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