Optical switch

Details Optical switch Optical switch

H - Electricity

01

P

345/56

H01P 3/20 (2006.01) G02F 1/025 (2006.01) G02F 1/313 (2006.01) H01S 3/10 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 1178703

ABSTRACT OF THE DISCLOSURE A semiconductor optical switch having a P-N junction with an active layer coupled with an input and output wave- guides has been found. An input optical signal with the wavelength close to the center Or the gain spectrum defined by said P-N junction is applied to said active layer, and said input optical signal is switched ON and OFF according to the injection current applied in said P-N junction. Said injection current for turning ON the optical switch is in the range between 80% and 90% of the threshold current which initiates oscillation operation of said P_N junction. When injection current is zero, an input optical signal does not appear at an output, and with the above injection current Or 80-90% of the threshold current, an input optical signal appears at an output terminal. When a switch is in ON state, an input optical signal is amplified with some gain.

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