Vendors of GPON Optical Transceivers

AOI transceiver-pon

GPON transceivers are used in the OLT and in the ONT to interface to the optical fiber used to connect the two.  Even though GPON is specified to support both dual and single fiber implementations, I have yet to encounter a dual fiber implementation.   A single fiber implementation uses BIDI or bidirectional GPON transceivers that both transmit and receive on the same fiber.  Obviously, the OLT transmit wavelength is the receive wavelength for the ONT and vice versa.  The OLT transceiver has no role in RF video support other than rejecting the 1550nm wavelength (which is a very high power signal).

The ONT transceiver is a diplexer when it supports two wavelengths, and it is a triplexer when it supports the third, RF overlay wavelength.  Diplexers and triplexers are typically very different designs, and one vendor may provide only diplexers or triplexers.

Diiplexer and Triplexer

The following vendors all provide GPON ONT and/or OLT transceivers.

• Applied Optoelectronics Inc. (AOI)

• DenseLight Semiconductors

• eGtran

• Emcore

• Enablence Technologies

• ExceLight Communications

• Finisar

• Fujitsu Optical Components

• LIG Neoptek

• LighTron

• NEC FiberOptech

• NeoPhotonics

• O-Net Communications

• Optical Zonu

• Optoway

• Pirelli Broadband Solutions

• Source Photonics

• Titan Photonics

• Wuhan Telecommunication Devices

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