An integrated pluggable optical tap module configured to be coupled to a host interface of a network equipment for tapping a signal of an optical transport link comprises a first, a second optical interface, and an active optical receiver. The optical pluggable module also includes a passive optical tap for splitting a signal received from the first optical interface and transmitting the signal on the second optical interface and a copy of the signal to the active optical receiver. The active optical receiver converts said signal to an electrical signal for transmission to the host interface.

A fiber-optic communication apparatus includes an optical monitor that monitors a WDM signal in. which optical signals of multiple channels are multiplexed, a processor that calculates a control value for controlling an optical power of the WDM signal, based. on a power spectrum detected by the optical monitor, in a unit interval of frequency narrower than a channel bandwidth of the WDM signal, and an optical power adjusting mechanism that adjusts the optical power of the WDM signal in the unit interval of frequency based on the control value.

Optical telecommunication receivers and transmitters are described comprising dispersive elements and adjustable beam steering elements that are combined to provide optical grid tracking to adjust with very low power consumption to variations in the optical grid due to various changes, such as temperature fluctuations, age or other environmental or design changes. Thus, high bandwidth transmitters or receivers can be provides with low power consumption and/or low cost designs.

A light source device includes: first and second laser diodes; a reflector having: first and second reflecting faces configured to reflect a portion of light from the respective first and second laser diodes and to transmit a portion of the light from the respective first and second laser diodes, and first and second exit faces configured to allow the portions of the light transmitted through the respective first and second reflecting faces to exit; and a photodetector including: first and second light receiving element configured to receive light exiting the first and second exit faces, respectively. The reflector is configured such that the light transmitted through the first reflecting face is hindered from exiting the second exit face and the light transmitted through the second reflecting face is hindered from exiting the first exit face.

A fiber optic ferrule having an angled endface is used in a system where the system can detect back reflection if there is an air gap but not if the fiber optic ferrule is physically mated to another optical device such as a fiber optic ferrule or transceiver. The angle of the end face is preferably between 3 and 5° and most preferably about 4° for most systems. No special detection equipment is needed to infer and determine an acceptable physical contact between two mated fiber-optic ferrules having the angled end faces.

This optical receptacle comprises: a first optical surface on which light emitted from a VCSEL is incident; a first reflection part which reflects, as monitor light traveling to a detection element; a light separation part which separates monitor light and signal light; a second optical surface which emits the signal light to the end surface of the optical transmission body; and a third optical surface which emits the monitor light reflected by the first reflection part and the monitor light separated by the light separation part to the detection element. Two second reflection parts of the light separation part are disposed so as to be located within a luminous flux of the light incident on the first optical surface such that a predetermined condition is satisfied.

Described herein are techniques for yield enhancement in photonic communications platforms. A photonic communication platform may include a photonic substrate patterned with a plurality of photonic modules including at least first and second photonic modules, wherein the first and second photonic modules are copies of a common template photonic module. Yield enhancement may be accomplished using photonic redundancy and/or electronic redundancy. Photonic redundancy may involve redundant optical lanes provided in parallel to primary optical lanes. Electronic redundancy may involve use of additional electronic circuits or wires running in parallel to electronic circuits or wires. Defective circuits may be disabled to prevent negative impacts on other parts of the electronic system. This can be done by providing power-isolating switches that completely disable and isolate the defective circuits.

An optical cable includes an optical fiber having a fiber core and a fiber cladding, and an output coupling plug at an output coupling-side fiber end of the optical fiber. The output coupling plug comprises at least one cladding light sensor arranged behind the output coupling-side fiber end and configured to measure cladding light that exits frontally from the fiber cladding at the output coupling-side fiber end.

A silicon photonics based single wavelength 100 Gbit/s PAM4 DWDM transceiver in a pluggable form factor having a transmitter, said transmitter having: a DWDM laser source; a fiber array pigtail having a polarization maintaining fiber and an output single mode fiber; a silicon photonics modulator chip configured to optically connect to the DWDM laser source through the usage of the polarization maintaining fiber, a modulator driver chip connected to the silicon photonics modulator chip and an LC receptacle configured to optically connect to the silicon photonics modulator chip through the usage of the output single mode fiber. The disclosed transmitter may be further comprised of a reference loop within the silicon photonics modulator chip to allow for the utilization of a passive alignment approach for optically connected elements. The disclosed transceiver may be configured for use with C-band DWDM applications for utilization in applicable technologies, including 5G telecommunications.

Provided are a subminiature optical transmission module and a method for manufacturing same. The optical transmission module includes: a mold body having a first surface and a second surface opposite to each other; multiple edge-type light emitting elements, each of which is molded inside the mold body by fitting same to the first surface so as to match with the first surface and generates an optical signal in the edge direction of a chip; and an optical component disposed on one side thereof so as to optically multiplex multiple optical signals incident from the multiple edge-type light emitting elements and to output same, wherein the identical height is configured between the surface of each light emitting element and the optical axis of the optical component, and the edge direction of the chip is parallel to the first surface of the mold body.