Optical module

1. An optical module comprising:

a housing having an electrical signal port for inputting and/or outputting an electrical signal, and an optical signal port for inputting and/or outputting an optical signal;

a first substrate arranged in the housing so as to connect to the electrical signal port;

an optical fiber arranged in the housing so as to connect to the optical signal port; and

a second substrate provided with an optical device which connects to the optical fiber to input the optical signal from the optical fiber and output the optical signal to the optical fiber, and arranged in the housing so as to electrically connect to the first substrate and to be inclined with respect to a base plane of the housing and the first substrate.

2. The optical module according to claim 1 , wherein the second substrate is inclined with respect to the base plane of the housing at an angle equal to or more than 70 degree and less than 90 degree.

3. The optical module according to claim 1 , wherein the housing comprises a planar portion inclined with respect to the base plane of the housing, the second substrate being fixed to the planar portion.

4. The optical module according to claim 3 , wherein the planar portion comprises a first planar portion on a first inner wall and a second planar portion on a second inner wall opposite to the first inner wall, which is spaced from the first planar portion, the second substrate being fixed to a fixing plate located both on the first and second planar portions.

5. The optical module according to claim 4 , wherein the second substrate is a flexible substrate, and extends through a space surrounded by the fixing plate, the base plane of the housing, the first and second planar portions to electrically connect to the first substrate.

6. The optical module according to claim 5 , wherein the second substrate is electrically connected both to a front surface and a back surface of the first substrate and arranged in a U-shaped manner such that the second substrate surrounds the front surface of the first substrate, the fixing plate, and the back surface of the first substrate.

7. The optical module according to claim 4 , wherein the fixing plate is screwed both to the first and second planar portions.

8. The optical module according to claim 3 , wherein the housing further comprises a heat dissipating member, the second substrate being held between the heat dissipating member and the planar portion.

9. An optical module comprising:

a housing having an electrical signal port for inputting and/or outputting an electrical signal, and an optical signal port for inputting and/or outputting an optical signal;

a first substrate arranged in the housing so as to connect to the electrical signal port;

an optical fiber arranged in the housing so as to connect to the optical signal port; and

a second substrate provided with an optical device which connects to the optical fiber to input the optical signal from the optical fiber and output the optical signal to the optical fiber, and arranged in the housing so as to electrically connect to the first substrate and to be inclined with respect to a base plane of the housing,

wherein the housing comprises a planar portion inclined with respect to the base plane of the housing, the second substrate being fixed to the planar portion,

wherein the planar portion comprises a first planar portion on a first inner wall and a second planar portion on a second inner wall opposite to the first inner wall, which is spaced from the first planar portion, the second substrate being fixed to a fixing plate located both on the first and second planar portions,

wherein the second substrate is a flexible substrate, and extends through a space surrounded by the fixing plate, the base plane of the housing, the first and second planar portions to electrically connect to the first substrate, and

wherein the second substrate is electrically connected both to a front surface and a back surface of the first substrate and arranged in a U-shaped manner such that the second substrate surrounds the front surface of the first substrate, the fixing plate, and the back surface of the first substrate.

10. An optical module comprising:

a housing having an electrical signal port for inputting and/or outputting an electrical signal, and an optical signal port for inputting and/or outputting an optical signal;

a first substrate arranged in the housing so as to connect to the electrical signal port;

an optical fiber arranged in the housing so as to connect to the optical signal port; and

a second substrate provided with an optical device which connects to the optical fiber to input the optical signal from the optical fiber and output the optical signal to the optical fiber, and arranged in the housing so as to electrically connect to the first substrate and to be inclined with respect to a base plane of the housing,

wherein the housing comprises a planar portion inclined with respect to the base plane of the housing, the second substrate being fixed to the planar portion,

wherein the planar portion comprises a first planar portion on a first inner wall and a second planar portion on a second inner wall opposite to the first inner wall, which is spaced from the first planar portion, the second substrate being fixed to a fixing plate located both on the first and second planar portions, and

wherein the fixing plate is screwed both to the first and second planar portions.