Photoelectric device with optical fiber and laser emitting chip

Details Photoelectric device with optical fiber and laser emitting chip Photoelectric device with optical fiber and laser emitting chip

1987-05-26

1989-02-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 9620, H01J 516, G02B 636

Patent

active

048033618

ABSTRACT:
In a photoelectric device, particularly, a photoelectric device for optical communication, an optical fiber is fixed at two fixing points so that the extremity of the optical fiber is disposed opposite to the light emitting surface of a laser diode chip and the optical fiber extends in a nonlinear shape, for example, in a moderate curve, between the two fixing points. Even though holding members fixedly holding the optical fiber at the two fixing points and a base member supporting the holding members are formed of a metal or metals having a coefficient of thermal expansion far greater than that of the optical fiber, and even if the distance between the two fixing points is varied due to the thermal expansion or contraction of the holding members and the base member, the optical fiber is obliged only to change the shape of extension. Therefore, the optical fiber and the solder fixing the optical fiber to the holding members at the two fixing points are not subjected to repeated stress, and hence the fatigue of the optical fiber and the solder is avoided. Accordingly, the photoelectric device is able to continue stable optical communication regardless of temperature variation.

REFERENCES:
patent: 4296998 (1981-10-01), Dufft
patent: 4399453 (1983-08-01), Berg et al.
patent: 4403243 (1983-09-01), Hakamada
patent: 4591711 (1986-05-01), Taumberger
patent: 4687290 (1987-08-01), Prussas
patent: 4702556 (1987-10-01), Ishii et al.
patent: 4707066 (1987-11-01), Falkenstein et al.
patent: 4708429 (1987-11-01), Clark et al.
Shibanama et al., "DIP Type LO Modules for Optical Telecommunications," NEC vol. 38, No. 2, 1985, pp. 84-89.
Hirgo et al., "Semiconductor Lasers for Optical Communications," Hitachi Hyoron, No. 10, pp. 39-44, Oct. 1983.

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