Optical device and optical transmitting-receiving module

An optical transmitting-receiving module comprising:

• a photonic integrated circuit chip having a first surface on which an optical circuit for configuring an optical modulator and an optical receiver and first electrical wiring are formed;
• a resin member that makes contact with at least part of the photonic integrated circuit chip;
• a driver chip that drives the optical modulator;
• an amplifier chip that amplifies an output signal of the optical receiver;
• and
• a digital signal processor chip that controls the driver chip and that processes an output signal of the amplifier chip,
• wherein a dam structure is formed along an outer circumference of the first surface,
• at least part of the optical circuit is formed using a different material that is different from a material of the photonic integrated circuit chip,
• the resin member seals the photonic integrated circuit chip without sealing an area on an inner side with respect to the dam structure of the first surface,
• second electrical wiring is formed on a surface of the resin member,
• each of a terminal of the driver chip, a terminal of the amplifier chip, and a terminal of the digital signal processor chip is connected electrically to the second electrical wiring on the resin member, and
• the second electrical wiring is connected electrically to the first electrical wiring.