OPTICAL BISTABLE CIRCUIT,申请号JP19840210723-传众专利搜索

OPTICAL BISTABLE CIRCUIT

申请公布号：JPS6188231(A)

申请号：JP19840210723

申请日期：1984.10.08

申请公布日期：1986.05.06

申请人：

NEC CORP

发明人：KOBAYASHI ISAO

分类号：H03K19/14;G02F1/35;G02F3/00;G02F3/02;H01S5/00

主分类号：H03K19/14

摘要：PURPOSE:To obtain an optical bistable circuit which operates with a low light trigger by employing a method which amplifies external input trigger light by an optical amplifier and then applies it to a bistable semiconductor laser. CONSTITUTION:The bistable semiconductor laser 1 base hysteresis in its current- light output characteristic and light input-light output characteristic. Then when the input trigger light 200 is made incident from the incidence terminal 120 of the optical amplifier 2 while a proper bias current is applied, it is amplified in an optical amplifier active area 100 and enters a light guide 110. The light guide 110 is coupled optically with the striped active area of the semiconductor laser 1, so amplified input trigger light 200 is supplied to the bistable semiconductor laser 1, which is triggered into the 'on' state. The necessary level of this trigger light 200 may be extremely small because it is amplified by the optical amplifier 2, and therefore the optical bistable circuit which operates with the low trigger input is obtained.