Optical fiber tap for monitoring laser input power
First Claim
Patent Images
1. An apparatus for controlling an output of a light source transmitting an optical signal into a single mode optical fiber, comprising:
- means for stripping a first part of the optical signal from a cladding of the single mode optical fiber;
means for bending the optical fiber downstream from the stripping means and withdrawing a second part of the optical signal from a core of the fiber downstream from the stripping means;
means for detecting the second signal part;
feedback means for using the detected second signal part to control an output of the light source to better linearize an amount of power injected into the fiber.
4 Assignments
0 Petitions
Accused Products
Abstract
An output of a light source coupled to an optical fiber is controlled by an apparatus comprising a mode stripper for stripping a first part of the optical signal from the cladding of the optical fiber, means for bending the optical fiber and withdrawing a second part of the optical signal from a core of the fiber downstream from the stripper, means for detecting the second part of the optical signal, and feedback means for using the detected second signal part to control an output of the light source to better linearize an amount of power injected into the fiber.
22 Citations
15 Claims
-
1. An apparatus for controlling an output of a light source transmitting an optical signal into a single mode optical fiber, comprising:
-
means for stripping a first part of the optical signal from a cladding of the single mode optical fiber; means for bending the optical fiber downstream from the stripping means and withdrawing a second part of the optical signal from a core of the fiber downstream from the stripping means; means for detecting the second signal part; feedback means for using the detected second signal part to control an output of the light source to better linearize an amount of power injected into the fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An optical fiber analog modulation network, comprising:
-
a single mode optical fiber; a laser confronting an end of the optical fiber for generating an optical signal and injecting the optical signal into the optical fiber; means for stripping cladding and buffer modes from the optical fiber downstream from the fiber end; means for bending and withdrawing a part of the optical signal from the fiber downstream from the stripping means; means for detecting the optical signal part; means for comparing a magnitude of the detected optical signal part to a magnitude of the generated optical signal and adjusting the generated optical signal magnitude in response thereto so as to linearize power input into the fiber. - View Dependent Claims (11, 12, 13)
-
-
14. An apparatus for controlling an output of a light source transmitting an optical signal into an optical fiber, comprising:
-
an optical fiber having a core, a cladding, and a buffer, a section of the buffer being removed in a vicinity of a front end of the fiber; an optical coupler disposed in contact with the cladding in the vicinity of the fiber front end for stripping cladding modes from the fiber; means for withdrawing part of the optical signal from a core of the fiber downstream from the stripping means; means for detecting the signal part; feedback means for using the detected signal part to control an output of the light source to better linearize an amount of power injected into the fiber. - View Dependent Claims (15)
-
Specification