In this paper we introduce two European projects and one UK project, which will respectively develop an eco-system for advanced integrated photonic technologies for reconfigurable WDM hyperscale data centre architectures and quantum networking. Horizon Europe DYNAMOS project is developing the building blocks for reconfigurable WDM architectures including driverless electro-optic modulators, tuneable lasers and a novel under-board fibre flexplane system. Horizon Europe ADOPTION is developing co-packaged optics solutions for an ultra-high bandwidth silicon photonic PIC transceiver. InnovateUK QPICPAC is developing a novel stamped metallic micro-mirror array for advanced PIC-to-fibre coupling with the potential to dramatically reduce PIC design and assembly costs. Although the latter is a quantum project, the advanced PIC coupling technologies will be immediately deployable in co-packaged optics applications.
Augmented, virtual, and mixed reality (XR) displays require miniature light engines that can be worn near-theeye. Laser beam scanner (LBS) architectures use light from a hermetically-sealed laser beam module (LBM) and scan the light with a MEMS mirror into a combiner. This paper presents an improved method for packaging a red, green, and blue (RGB) LBM using stamped mirror arrays that fold the light beam, correct beam shape, and redirect beam propagation to a MEMS mirror. The mirror array simplifies the optical path and eliminates passive components like dichroic filters and refractive lenses such as those used for slow-axis and fast-axis correction. This new approach reduces the size, weight, and cost of LBMs for XR applications.
High-power lasers have many applications in diverse fields such as optical communication, material processing (manufacturing), free-space optics, and 3D vision techniques such as LiDAR. These applications require optical components that alter or redirect laser beams to be tolerant to harsh environments, stable to thermal changes, and tolerant of high power levels that might otherwise damage materials or surfaces. It is common to use processes like machining, grinding, or polishing to achieve both form and finish requirements in either refractive or reflective materials. In this paper, we present a new alternative process for reflective freeform optical components suited to high-power assemblies that are made of aluminum for its thermal properties but manufactured by ultra-high precision stamping. The aluminum freeform mirrors can be used in air for free-space applications external to the laser module, or they can be assembled inside a laser diode package to provide beam shaping and redirection of the high-power beams very near the laser diode. This paper presents an exemplary optical design and thermal analyses for two cases: continuous wave (stead-state) lasers and pulsed (transient) lasers. The analyses demonstrate distinct benefits in thermal aberrations and lower operating temperatures for aluminum relative to a similar component made of a common polymer used in molded optics.
Optical communication roadmaps have been moved forward 3-4 years by the critical need for remote working during the pandemic. The development of 800 Gb/s and 1.6 Tb/s technologies exceeds original projections with the first co-packaged optical modules anticipated in 2023. Furthermore, advances in quantum computing and quantum communication are creating a demand for new “quantum grade” optical fiber interconnect to support quantum networks and connectivity to quantum photonic integrated circuits. In this paper, we report on the latest advances in optical interconnect required to enable the proliferation of co-packaged optics, quantum networks and quantum photonic integrated circuits.
Optical interconnect technology has been adopted for over half a century. Today approximately one billion optical connectors and interconnects are deployed annually, and the growth is expected to increase as more technologies incorporate optical and photonic components. Although its basic function (the conveyance of photons over a channel) has remained the same, optical interconnect has been constantly evolving and innovating over the decades to push the boundaries of performance. In this paper we report on the evolution of optical interconnect technology from its initial applications in long haul telecommunications links to its future application to quantum networks.
International standardisation will play a crucial role in accelerating the commercial adoption of quantum technologies.
We report on the activities in mainstream international standards bodies to standardize different aspects of quantum
technologies and identify where standards will be most relevant and will not impede future innovation.
This paper will introduce the evolution of optical interconnect since the adoption of optical fiber as the primary medium for long distance communication back in the 1970’s. The author will share the recent technological development of optical interconnect and also market trends that are driving innovation and adoption in the interconnect industry. Key industries driving optical interconnect include Data Centers & Photonic Integrated Circuits.
This paper presents a study on an all-optical multicasting switching matrix design based on SOA and AWG technology
for all optical DWDM network. The technique not only has the capability to control the degree multicasting optically but
also perform double stage of wavelength conversion. Experimental results have shown the design's capability to
multicast an incoming 10Gbps optical signal onto 16 outgoing signals using Cross Gain Modulation and then using
Cross phase modulation as a second stage of conversion to perform 2R (re-amplified and re-shape).
We present an incoherent optical spectral CDMA (OS-CDMA) multiple-access system that uses in-fibre Bragg gratings for encoding/decoding. The system comprising four channels, one desired and operating at a 2.5Gbps and 10Gbps. Our measurements verify that this technique suffers from severe chromatic dispersion. Nevertheless with appropriate dispersion compensation, the system is able to achieve a span of 100km.
KEYWORDS: WDM-PON, Network architectures, Fiber to the x, Wavelength division multiplexing, Signal attenuation, Network security, Receivers, Transmittance, Optical testing, Internet
This paper introduces a novel FTTH-PON network architecture suitable for unlimited user and service scaling. It employs a passive NxN AWG and exploits the wavelength cyclical routing which is made possible by the devices Free Spectral Range (FSR) property at 2.5Gbps. The proposed architecture is based upon the WDM-PON features unique
properties including the possibility of offering simultaneously both broadcast and switches services plus additional advantages in term of signal privacy, easy fault location and direct capacity upgrade and also has the potential of offering a wide variety of services on the same physical network. Although the additional AWG in the network posses an extra 5dB power penalty but an optical transmission test demonstrate an error free transmission has been achieved with a 25km passive optical link with a 16×16 AWG and a 1×32 splitter installed.
This paper introduces a design for a high capacity multicasting capable Optical Packet Switched Router (OPSR). It incorporates an Arrayed Waveguide Grating (AWG) as its core switching matrix to manage the ever increasing packet switched traffic within the optical network. The OPSR has the capability to switch optical packet traffic through the AWG with a switching speed of a few nano-seconds (nsec) at a bit rate of 10Gbps and above with multicasting capability. The capabilities offered by this OPSR will speed up all-optical packet switching and reduce packet latency and consequently packet loss.
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