Evaluation of optical switches for Space applications

Poudereux, David; Barbero, Juan; Tijero, J. M. G.; Esquivias, I.; Mackencie, Iain

doi:10.1117/12.2536188

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…Recently, besides the use of switching devices in TLC payloads, further Space applications of photonic switches are emerging, including optopyrotechnics, atom sensors and laser interferometry, although with different specifications. Optopyrotechnics requires a number of ports > 2, XT < −50 dB and IL < 1; atomic sensors, number of ports > 4, IL < 1 and the XT is a non-limiting factor; laser interferometry, number of ports > 2, IL < 1 dB and the XT is a non-limiting factor [20]. Since the proposed device fulfils some critical performance among the requested ones, additional investigation aimed at improving the overall characteristics of the proposed device is needed in order to make it suitable for a wider range of applications.…”

Section: × 8 Dilated Banyan Matrix Designmentioning

confidence: 99%

“…Some of these technologies, such as liquid crystal, magneto-optic, bulk electrooptic and waveguide electro-optic have also achieved good market success. In this regard, they are providing flexibility in optical network connectivity, including optical protection, fibre test systems, remotely reconfigurable multiplexers and sensing [19,20]. Several topologies can be considered for connecting basic switching cells with the aim of realizing large N × N switching matrices [21].…”

Section: Introductionmentioning

confidence: 99%

“…When evaluating the switching technology more appropriately for Space, specific attention must be paid to some features, such as switching speed, insertion loss, crosstalk, scalability, multiplexing capability and reliability. As an example, there should be more than two input/output ports, a response time in the order of a few µs, an insertion loss of less than 3 dB and crosstalk lower than −20 dB in a TLC payload [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…More recently, interest has turned to more reliable switching configurations with no moving parts for solutions, such as integrated microphotonic switching, already largely investigated for terrestrial applications and available in the market. Analyses have been proposed on the challenges and benefits of adapting commercial off-the-shelf solutions to Space applications, demonstrating crosstalk <−20 dB, switching time <500 µs, port number >2, power consumption in the order of hundreds of mW, and footprints in the order of hundreds of mm 2 [19,20].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of a large bandwidth 2 × 2 interferometric switching cell based on a sub-wavelength grating

Brunetti

Marocco

Benedetto

et al. 2021

J. Opt.

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In the last few decades, increasing research effort has focused on the design of telecommunication payload systems with advanced features and lower costs in space applications. In this context, photonic solutions have already proven the potential to achieve additional functionalities, such as multiplexing or switching of RF or microwave signals, with consequent additional benefits in terms of size and mass reduction. In this paper, we report on the design of a 2 × 2 switching cell based on a thermo-optic interferometric configuration, whose key element is a sub-wavelength grating. We have theoretically demonstrated a broadband operation, with better performance in terms of operating wavelength range and compactness with respect to the existing interferometric cells. The switching cell shows a worst extinction ratio of about 13 dB, insertion loss of less than 2 dB, crosstalk of 12 dB, over a bandwidth of 150 nm, within a footprint as small as 240 µm × 9 µm. To demonstrate its potential use as a routing fabric in flexible telecommunication satellite payloads, as an example, the designed switching cell has been used as a building block of an 8 × 8 dilated Banyan matrix, where large bandwidth (150 nm), low crosstalk (−38 dB), small footprint (≈1620 µm × 576 µm) and relatively low power consumption (276 mW) have been achieved.

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Section: × 8 Dilated Banyan Matrix Designmentioning

confidence: 99%