Optical transmission system
A high-speed optical transmission system includes an optical fiber for transmitting light and an optical receiver for receiving light transmitted from the optical fiber. The optical fiber is a plastic optical fiber (POF), and the optical receiver has a lateral pin structure.
1 . An optical transmission system comprising:
an optical fiber for transmitting light therethrough; and
an optical receiver for receiving the light transmitted through and exited from the optical fiber,
the optical fiber having a diameter greater than or equal to 50 μm, and the optical receiver having a lateral pin structure.
2 . An optical transmission system as defined in claim 1 , wherein the optical fiber is one of a plastic optical fiber (POF), a hard plastic clad optical fiber (HPCF) and a quartz fiber.
3 . An optical transmission system as defined in claim 1 , wherein the transmission rate from the optical fiber to the optical receiver is not less than 100 Mbps.
4 . An optical transmission system as defined in claim 1 , wherein the optical receiver is made of Ge or SiGe.
5 . An optical transmission system as defined in claim 1 , wherein the wavelength of the light exited from the optical fiber is within the range of 770 nm to 860 nm.
6 . An optical transmission system as defined in claim 1 , wherein the optical fiber is a plastic optical fiber (POF), and wherein the POF includes a core made of molecules, and one of a deuterium atom and a halogen atom is substituted for each C—H bond in the molecules.
7 . An optical transmission system as defined in claim 1 , wherein the optical receiver includes a light receiving portion, and the optical fiber includes a core, and the outer diameter of the light receiving portion is larger than that of the core of the optical fiber.
8 . An optical transmission system as defined in claim 1 , wherein the optical fiber is a plastic optical fiber (POF), and wherein the optical fiber and the optical receiver are optically connected to each other while a gap of within the range of 150 μm to 500 μm is provided between a light-exiting end of the optical fiber and a light-receiving end of the optical receiver.
9 . An optical transmission system as defined in claim 1 , wherein the optical fiber is one of a step-index fiber and a graded-index fiber.
10 . An optical transmission system as defined in claim 1 , wherein the numerical aperture of the optical fiber is not less than 0.2.
11 . An optical transmission system as defined in claim 1 , wherein a distribution coefficient g of refractive indices of the optical fiber obtained by the following equation:
n
(
r
)
=
n
1
[
1
-
2
Δ
(
r
a
)
g
]
1
/
2
,
1
≤
r
≤
a
is within the range of 1.5 through 3, wherein n(r) is the radial distribution of refractive indices from the center of the core of the optical fiber, n 1 is a refractive index at the center of the core, a is the radius of the core, and Δ is a relative refractive index.
12 . An optical transmission system as defined in claim 1 , wherein the optical fiber and the optical receiver are connected to each other through one of a resin.
13 . An optical transmission system comprising:
an optical fiber for transmitting light therethrough;
an optical receiver for receiving the light transmitted through and exited from the optical fiber; and
an optical transmitter for emitting light toward the optical fiber,
the optical fiber having a diameter greater than or equal to 50 μm, and the optical receiver having a lateral pin structure.
14 . An optical transmission system as defined in claim 13 , wherein the optical fiber is one of a plastic optical fiber (POF), a hard plastic clad optical fiber (HPCF) and a quartz fiber
15 . An optical transmission system as defined in claim 13 , wherein the optical receiver is made of Ge or SiGe.
16 . An optical transmission system as defined in claim 13 , wherein the wavelength of the light exited from the optical fiber is within the range of 770 nm to 860 nm.
17 . An optical transmission system as defined in claim 13 , wherein the optical fiber is a plastic optical fiber (POF), and wherein the POF includes a core made of molecules, and one of a deuterium atom and a halogen atom is substituted for each C—H bond in the molecules.
18 . An optical transmission system as defined in claim 13 , wherein the optical receiver includes a light receiving portion, and the optical fiber includes a core, and the outer diameter of the light receiving portion is larger than that of the core of the optical fiber.
19 . An optical transmission system as defined in claim 13 , wherein the optical fiber is a plastic optical fiber (POF), and wherein the optical fiber and the optical receiver are optically connected to each other while a gap of within the range of 150 μm to 500 μm is provided between a light-exiting end of the optical fiber and a light-receiving end of the optical receiver.
20 . An optical transmission system as defined in claim 13 , wherein a distribution coefficient g of refractive indices of the optical fiber obtained by the following equation:
n
(
r
)
=
n
1
[
1
-
2
Δ
(
r
a
)
g
]
1
/
2
,
1
≤
r
≤
a
is within the range of 1.5 through 3, wherein n(r) is the radial distribution of refractive indices from the center of the core of the optical fiber, n1 is a refractive index at the center of the core, a is the radius of the core, and Δ is a relative refractive index.