Patent · US Expired

Tunable optical encoder and decoder

US6504969B1 · kind B1 · utility

7Cited by

4References

17Claims

0Family size

Assignee

National Science Council · TW

Inventors

Shyh-Lin Tsao · Fenglin, TW
Jingshown Wu · Taipei, TW
Che-Li Lin · Taipei, TW

Key dates

Filing date	Mar 3, 2000
Grant date	Jan 7, 2003
Priority date	—
Expiry date	Mar 3, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/2821
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present invention discloses an encoder and a decoder that are tunable, controllable, and have low amount of energy loss during encoding or decoding. The encoder comprises a 2×2 EO coupler, and an optical recirculating loop (waveguide) which comprises a semiconductor optic amplifier. The decoder comprises a 2×2 EO coupler, an optical recirculating loop (waveguide) which comprises a semiconductor optic amplifier, a light detector, and a bit determining device. Thus, the structures of the encoder and the decoder are simple, and can be integrated on a photonic integrated circuit so that the reliability is increased and the cost of production decreased.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.