Abstract: A temperature-controlled flexible optical circuit includes a length of pre-fabricated optical fiber secured to a partially flexible heater circuit for heating and maintaining the optical fiber at a substantially constant temperature. Heater circuit may also comprise temperature sensors.

Abstract: An erbium-doped fiber amplifier, a flexible optical circuit and a method for fabricating the flexible optical circuit are described herein. Basically, the erbium-doped amplifier includes a laser diode, a multiplexer and a flexible optical circuit. The flexible optical circuit in one embodiment includes a predetermined length of optical fiber that is placed onto and secured to a partially flexible sheet of material. Several different embodiments of the flexible optical circuit are described herein. In operation, the erbium-doped amplifier receives an optical signal that is coupled by the multiplexer along with a light from the laser diode into the erbium-doped optical fiber which becomes excited by the light from the laser diode and outputs an amplified optical signal.