The role of optical modules in optical communication networks is photoelectric conversion, so what optical devices are mainly composed of optical modules? ETU-LINK will reveal the answer for everyone.

First of all, the two most important parts of the optical transceiver are the optical transmitting assembly (TOSA) and the optical receiving assembly (ROSA). Among them, the optical transmitting assembly (TOSA) mainly plays the role of converting electrical signals into optical signals (E/O ), judging its performance indicators mainly include optical power and threshold.

TOSA is mainly composed of a laser (TO-CAN), an adapter, and a die sleeve. In the long-distance optical module, an isolator and an adjustment ring are also added. The isolator plays the role of anti-reflection, and the adjustment ring is used to adjust the focal length. effect.

The function of the optical receiving component (ROSA) is to convert the optical signal into an electrical signal (O/E), and its performance indicators are mainly sensitivity (SEN), and the ROSA is composed of a detector and an adapter. TIA, APD-TIA, the adapter has two kinds of metal and plastic PE parts.

The light emitting device includes FP, DFB, VCSEL, EML, etc. The light emitting device generally integrates a laser diode (LD Chip), a backlight detection tube (PIN Chip), a thermistor, a TEC cooler and an optical Alignment mechanism and other components.

In addition, the optical transmitting and receiving component of BIDI single-fiber optical module is BOSA, which consists of laser, adapter, filter, base, detector, isolator and die sleeve. BOSA is the main component of BiDi single fiber optical module.