Optical amplifier
AssigneeMolex Incorporated
InventorsFengqing Zhou, Tian Zhu, Haifeng Lv, Yu Hu
Life of this patent
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Abstract
An optical amplifier includes an input port for receiving an input optical signal; a wavelength division multiplexer (204) having a first input coupled to the input port, a second input coupled to a pump source (206), and an output coupled to an amplification fiber (208); and an integrated component (210) configured to provide output monitoring and isolation, wherein the integrated component (210) is configured to separate a first portion of a light signal received from the amplification fiber (208), direct the first portion to a photo detector, direct a second portion of the input light from the amplification fiber (208) to an output port, and attenuate light signals received from the output port.
Claims11
An optical amplifier comprising:
- an input port for receiving an input optical signal;
- a wavelength division multiplexer having a first input coupled to the input port, a second input coupled to a pump source, and an output coupled to an amplification fiber;
- and
- a first and second integrated component each comprising a tube packaging an input and output fiber, a birefringent crystal, a half wave plate, a lens, a faraday rotator, and a prism, the integrated component configured to provide output monitoring and isolation, wherein the integrated component is configured to:
- separate a first portion of a light signal received from the amplification fiber, direct the first portion to a photo detector, and direct a second portion of the input light from the amplification fiber to an output port, and wherein the integrated component is configured to attenuate light signals received from the output port;
- wherein the second integrated component is positioned between the input port and the wavelength division multiplexer, the second integrated component configured to provide input monitoring and isolation wherein the second integrated component is configured to:
- separate a first portion of the input optical signal received from the first port, direct the first portion to a photo detector and, direct a second portion of the input optical signal to an output coupled to the wavelength division multiplexer, and wherein the second integrated component is configured to attenuate light signals received from the wavelength division multiplexer.
An integrated component comprising:
- an input optical fiber and an output optical fiber;
- a birefringent crystal having a first surface facing an end of the input optical fiber and the output optical fiber and a second surface facing a wave plate, wherein the wave plate covers a portion of the birefringent crystal;
- a lens optically positioned between the wave plate and a polarization rotator;
- and
- a prism positioned between the polarization rotator and a photodetector, wherein the prism comprises a first end surface facing the polarization rotator and a second end surface facing the photo detector, wherein the first end surface comprises a partial reflective coating, wherein the second end surface has a high reflection for wavelengths corresponding to a pump source and low or no reflection for wavelengths of the optical signal.
Dependencies are inferred from the claim text.