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US 7,093,988 B2Granted
Bi-directional optical transceiver module with double caps and method of improving the efficiency and the reliability of same
AssigneeSamsung Electronics Co., Ltd.
InventorMasahiko Tsumori
Life of this patent
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Abstract
The disclosed invention relates to a bi-directional optical transceiver module and method of improving the efficiency and reliability of the same, where interference from optical crosstalk and electromagnetic waves are minimized and a wavelength division multiplexing filter can be easily mounted at a predetermined inclination angle, thereby improving the efficiency and reliability of the bi-directional optical transceiver module.
Claims10
A bi-directional optical transceiver module comprising:
- an optical waveguide element through which input and output optical signals pass through;
- a lens holder in an upper end of which the optical waveguide element is inserted and fixed, the lens holder thereby serving as a body tube;
- a lens disposed at an upper portion in the lens holder, the lens converging each of the input and output optical signals;
- a stem supporting a lower end of the lens holder;
- an outer cap disposed on the stem, the outer cap enclosing a photodiode for receiving an optical input signal and converting it to an electrical signal, a semiconductor laser that modulates the electrical signal into an optical output signal, and a wavelength division multiplexing filter;
- and,
- an inner cap mounted in the outer cap that further isolates the photodiode.
4 more elements
A bi-directional optical transceiver module comprising:
- an optical fiber through which input and output optical signals pass through;
- a lens holder in an upper end of which the optical fiber is inserted and fixed for serving as a body tube;
- a lens disposed at an upper portion in the lens holder, the lens converging each of the input and output optical signals;
- a stem supporting a lower end of the lens holder;
- an outer cap disposed on the stem, the outer cap enclosing a photodiode for receiving an optical input signal and covering it to an electrical signal, a semiconductor laser that modulates the electrical signal into an optical output signal, and a wavelength division multiplexing filter;
- and,
- an inner cap mounted in the outer cap constructed of a material capable of withstanding electromagnetic waves from penetrating, the inner cap further encapsulating the photodiode preventing scattered light and diffusion-reflected light from being introduced into the photodiode.
4 more elements
Dependencies are inferred from the claim text.